{
  "manageEntity": {
    "action": "Update",
    "entityId": "664083814",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2a8c086f9091bb34752608066ced14d42be692fb2765aea9f07e9f074b43d271",
    "signature": "0xb729b88ce1696c25b6dabc444fb94391168ea2aa5ac7015f5f1dc2671a68ae46392a79c3f252f30a36d3918292a86be72b7806148078f031fa9ba6a79c7f2b421b",
    "signer": "0xE1Edd5A0ADcc2Ba5B73E968e3c6ceD8290B27a0C",
    "userId": "664083814"
  }
}