{
  "manageEntity": {
    "action": "Save",
    "entityId": "802038",
    "entityType": "Track",
    "nonce": "0x8012bd145cad0ce37d419f0d1648c7a47795418f6b6f4872ec3065c212513f67",
    "signature": "0x1ddaa1ba0af2a0f0920e33fbbfd471e78dbcb2a0df422dcc43284a7aba8c8a673254d75769f5a0bdd32226844f1c23f485c6fefe6fe2eb99cda0a5c7278c9fb91c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}