{
  "manageEntity": {
    "action": "Save",
    "entityId": "1522676220",
    "entityType": "Track",
    "nonce": "0xbc1619f2a7c566aa8f866ca5cc720e4dbc3db76050fbe3f2803c9815f2169d38",
    "signature": "0x8769aa285a324f36e9a83804d749d8a2cfe511a5b07aba4bd4bea78872f386022b701f067446d821a0dd8a8f7e1636904a045b7ae2108577d383c999dc5c8a6d1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}