{
  "manageEntity": {
    "action": "Save",
    "entityId": "2114751762",
    "entityType": "Track",
    "nonce": "0x8538f1fae0cc899ec77b4f332196bf9c265f714b70a157f8ce70b08437e89c74",
    "signature": "0x1a1d188b77425b928a50d2f92a6d22e21ca2aa54a08b7502a8d4fecfb9fe389a4b3b02ab234611dc1995e3f7f3514242d52b09ac558be958205c2243677bc9331c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}