{
  "manageEntity": {
    "action": "Save",
    "entityId": "326802186",
    "entityType": "Track",
    "nonce": "0x2c11d351e9b8fd584dc42b1e47c4317f3cb5b3e9f8aac724c99a9b0ee3b50ea0",
    "signature": "0x85a1f16cc9871ec9c5ec1d0fc0c8a8b7e3cbe58395b5cb690163dfd7ae3ef0b35530a4ba54a601152e2142a50dee4e0b3c217526ce69e26196e0ce6abf63f58e1c",
    "signer": "0xca797dA7dCB793742623d55EA81fb92A9566B550",
    "userId": "363062902"
  }
}