{
  "manageEntity": {
    "action": "Save",
    "entityId": "2127984075",
    "entityType": "Track",
    "nonce": "0x298b9904b83a66c4729aeb1fc68571af8edaed42ef3f89726326947961f43615",
    "signature": "0x5f2ff17c93ea2beaef1bc8db91d6022edf565d9686dbcfa000c9becc6c65603a7e7cfdc7e0932a4e304b992623e0ca73a7fa336f200bd0b113363c9eb392447b1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}