{
  "manageEntity": {
    "action": "Update",
    "entityId": "539276466",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera45fli2wd4ubola3trbx74wkgtsfdv6aujyfbqhsoi3h7rvqrebya\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1867225063},{\"type\":\"playlist\",\"playlist_id\":1016439760},{\"type\":\"playlist\",\"playlist_id\":868353925},{\"type\":\"playlist\",\"playlist_id\":1103612195}]}}}",
    "nonce": "0x52881e06a31dee6c43bf13927933599976e47707f234b77ff5dc9d6ee11cf747",
    "signature": "0xf2d767683ae5001ee4cc2c8cb1d830a91734dd14cbce045eed7c5341ae917b7932ff17cbdf5efeef84ce8852948091e9071c4bc912cba997dac5ada14e3c79ed1b",
    "signer": "0x7e920377E93611BcF59EAfe8db8F78027330a982",
    "userId": "539276466"
  }
}