{
  "manageEntity": {
    "action": "Save",
    "entityId": "1027509941",
    "entityType": "Track",
    "nonce": "1786660100087498827",
    "signature": "0x04ec960e6c11793ea241f9ed6ac1a0a5fb8479c8e945f80b9c3c2ecf9470a5a823179fda8573a3e2b246e49b9f6ef220fb9aefe6dd86643b1f466beda99a22da1b",
    "signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
    "userId": "568518925"
  }
}