{
  "manageEntity": {
    "action": "Save",
    "entityId": "1311717884",
    "entityType": "Track",
    "nonce": "0xa54e59c89f1e1fe75def114c273065da2e80fafb3e38ed54b123c3bc86d9c867",
    "signature": "0x6401abfc63799f927a7a0bbbdb46b915d3634baa2a8150c4ab9a62f66f96fb1d4bad0ffa9a9006149a1360f7694149c37d637267b083dc2e7ae0a79d35413e241b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}