{
  "manageEntity": {
    "action": "Save",
    "entityId": "292134064",
    "entityType": "Track",
    "nonce": "0x7d1805bf501f3176af0cef5c01c4fe7b5ee3d749d8a5787b99fd39ab65961d73",
    "signature": "0x5346f55615af3b26c5d75b2ffcf589f748e3073dc8731f3b886b005f5aa5609759f85f08ca382451bf0ab086de13f6eead51e473436c140ac9a358f208ffa7b41b",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}