{
  "manageEntity": {
    "action": "Save",
    "entityId": "1195002179",
    "entityType": "Track",
    "nonce": "0xd1a443730e9f337ba03fee082ce4a6cb8879e875bbcaec7d6bdf3d1bd2b83e5e",
    "signature": "0x596babb72c18b2f167e89e65ef58de265041a17b036908fba2d6c4f3b34583b23566ff2a2850ec3cf3637e8c7e2e62a465bd69f349e1873a370d71bcbb7cd2ac1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}