{
  "manageEntity": {
    "action": "Update",
    "entityId": "210761228",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x400c35169cc9340122d17c75f63f92856723f7666aa4de6738c2de865f4a9a40",
    "signature": "0x9943e5bda5a39ac0bfb5d69d4ea53d8d494421b2d297aa15743144674ffc50f37990e2fd396afd7801b87c079b29588bfe585af9c3580eeb105765d858f23a381c",
    "signer": "0xC68fb754d972e1351465F9B24e6e933AC7c10535",
    "userId": "210761228"
  }
}