{
  "manageEntity": {
    "action": "Save",
    "entityId": "82887177",
    "entityType": "Track",
    "nonce": "0xf504c477a591936cd2d78af3425e8bca965f47b0a75c8b1af2dc59a221cb8168",
    "signature": "0xed38e3ce0aa6c57ed2cf32b7988db39184c86117d4f602cf50a3fb0e751917857d9effc26c9ec781ebd090e3d73e0036b0170a02cd5ef289c7a04a490637e92c1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}