{
  "manageEntity": {
    "action": "Update",
    "entityId": "505182311",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x21e165105652a958b17a61dabafca18b71d3909ef0e4a697cd4f7dff50ed7c4b",
    "signature": "0xb0f29f963d74f8cb0757a55e680264645970c2d54a9d19f1cdeb0a637758b1f81b666ce1dbe7844502ce2eb211180cf63b2003382b2e942c760e0ef66892959f1c",
    "signer": "0xA819E5C5714510Db532e726DB8526f18026feA20",
    "userId": "505182311"
  }
}