{
  "manageEntity": {
    "action": "Save",
    "entityId": "853006631",
    "entityType": "Track",
    "nonce": "0x4511bcb714bc6bd3256d1c7939f14f92bb1df7772b4d4f08afa6131335a7c39c",
    "signature": "0x52234bc8a8085bc3c906a5193f0ab2c4d12519cd6c336a8a185c56f3f1a4fa2121960f84fd68c27948cf4e84c6a0e503f35e90645ff7321db517c9c888a01b0e1c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}