{
  "manageEntity": {
    "action": "Update",
    "entityId": "644144286",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe334c33bea3d7bbf980eef3cb40c50bcac1ec880cdcf0750f78bbb1c912131e3",
    "signature": "0x733945d44677986cef2c6a4dd9b6c8b4592996e01acb4e4bc444a618d4d9796e5ed26d90841440aa2e84a314204f3673ce92dd5e374f245febca289090e3496b1c",
    "signer": "0x79Baf4dB28e92821f1352A8C89eD61C1f058e9ea",
    "userId": "644144286"
  }
}