{
  "manageEntity": {
    "action": "Save",
    "entityId": "2034681874",
    "entityType": "Track",
    "nonce": "0x853b2cc1045bf87816fb33add11641fbbdce88e528ce37f633a8b5f12f75fcb5",
    "signature": "0x259b64e02b74a2a5fa6a58ebd184d35dcbd3bb53277b414c0a9354223117c3983dfadfd20706fdaf3caf5c09b673571c107f79427c132060d1e052bffc3f24191b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}