{
  "manageEntity": {
    "action": "Save",
    "entityId": "1350826306",
    "entityType": "Track",
    "nonce": "0xa32e69814f37fb9f4ebb921232962e835a82bc85482da1a22e8193656cfd9f33",
    "signature": "0xb5071b9a511c55c60b62a184fb0322d04a36772403408385945266f802602ce7141d1f79269d381baa1b6e99d9e44eb08114823f3ffb84ca4329e97cabdf0b0f1c",
    "signer": "0xca797dA7dCB793742623d55EA81fb92A9566B550",
    "userId": "363062902"
  }
}