{
  "manageEntity": {
    "action": "Save",
    "entityId": "1057703146",
    "entityType": "Track",
    "nonce": "0x36d4d3cd39f3adf7b451189391b679c3c566c99b885a8efce6427427c035e3f1",
    "signature": "0x1e33f6544018f21816489d2fec4a57fd6fbbc0836be1b6a7b359e43061ac5521288492e240a8507d946ab3f0b36885d7085ed5aaaa5f12a01c1534a731d6d5c51c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}