{
  "manageEntity": {
    "action": "Save",
    "entityId": "88044",
    "entityType": "Track",
    "nonce": "0x3c7b2e8fce2fa96529a4151f4fbc838eda42e1f5ef51e6ca44a3e2975668f9e1",
    "signature": "0x7fbecd25df923b3ea895c03443937179e6b92a989ea72afc04884a5d9e97bd904600406ed095e8f5cd611a88771f6bbe15e7da6f1883ef96eb7b9cfd9bf183201b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}