{
  "manageEntity": {
    "action": "Save",
    "entityId": "961217",
    "entityType": "Track",
    "nonce": "0x3dca3a4c1cc6827ee1d607cb4ed062d5fa198330be1d0b65c4afb977add1abab",
    "signature": "0xf17cfdb2f287a943a6a7fbc59318521f0105a3c81bedc33481fd65ec828387fa0e2e5d2020cf1f3de68358121475da9cf445101b656239c91b2d94339ea644521b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}