{
  "manageEntity": {
    "action": "Update",
    "entityId": "422383007",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfc7e2a99e1478d0ef31269b1c6c18180d5be4209c9d7a9aee74ce9036c0c8db3",
    "signature": "0x35f88767af04073170aab2d8f90b6012cc11218e84e4c1fed888079588bad2e6750443c756653924bc65a575aa9386fca451243328e6630dd364f15132fe51dc1c",
    "signer": "0x4466e1a64e35Dbca375F17dc03485C9C5c71F49c",
    "userId": "422383007"
  }
}