{
  "manageEntity": {
    "action": "Update",
    "entityId": "503591447",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0579a9d0ee9314676fba86ac7bbd5d16c03e40ce2f86326e888f5c5e8ffb918a",
    "signature": "0xed17e1ff8cdb14b2340dfe6c5de266189fbcb73ffff65b0fdb3bc74eb96536fc1c4e98beaeca017118bf759e4d3bb2ebfb90569d0309c3fcc626c59483f224d41b",
    "signer": "0x6fCF27923aE49B784D4ddADC3b0295b49e8403f3",
    "userId": "503591447"
  }
}