{
  "manageEntity": {
    "action": "Save",
    "entityId": "872343677",
    "entityType": "Track",
    "nonce": "0xc48fada47f9f4027075b75b47bbe629190a845792b4e0dc7a7280e04d0d35941",
    "signature": "0xef029d099ef4a81f9cf5008f62950b55457d02509a5d6dc4f4644c502333a2775eafa0996d2b8a73530f8c8288ff12ca1728ed92d1300d9cc769b99274cc7f4a1c",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}