{
  "manageEntity": {
    "action": "Save",
    "entityId": "1836434630",
    "entityType": "Track",
    "nonce": "0x05d3651f09ba9c68af619de026afc73dbde0a8422982b54e42eb5e416d660b78",
    "signature": "0x26dd486e33e63078d6ff9161195c9ebcd54abe298e4aa77a970a5671305334487866b0e3a958fa2eec1c2fd716fe6c0cb525427dd147d43c5ed16c4a400e275d1b",
    "signer": "0x5b1BC6b15bFD49D3991AD6E84621e7f0FBF2a77e",
    "userId": "548409021"
  }
}