{
  "manageEntity": {
    "action": "Save",
    "entityId": "866568235",
    "entityType": "Track",
    "nonce": "0xdd0dc92b2d9c564dc160d69fb2ce626e3797140cfe39310b02764110d5ea0983",
    "signature": "0xd045227ebf3885ee5562325e02511d89ccb97badd195e2542e739dd338c83efb277812defb5aa4394e0d9629ac408068458fb014368f5b0963a41e331d9fc8821c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}