{
  "manageEntity": {
    "action": "Download",
    "entityId": "1435647605",
    "entityType": "Track",
    "nonce": "0xd81e689e2680999eb0b98b460d922f19e55a0895f98617676f7ec84a58183992",
    "signature": "0x746f0088ca9529e02cc0cdfd327de0e81f62a86625f276f785bbab5675dc2215570be7e9a9952dc4d1b66672ec9684970c03601340086ee9c277b598a62db9fd1c",
    "signer": "0xf7Caf5598055faf8dd2F2deD9ef12c5210004EA1",
    "userId": "63177344"
  }
}