{
  "manageEntity": {
    "action": "Save",
    "entityId": "1095525",
    "entityType": "Track",
    "nonce": "0xcc6a1dcea43cf9ff29c8aff68f5364bf8f3f839baaf7eede0c6817d288edfbf2",
    "signature": "0xee3d4732b7ecc9c7034f76604b9b82b3e769624212a6f7505647cb9425f69a1169648dcc462d53e5e88b20ded0b5e5e3acabcc486262c276beb12e6d5591c4e71b",
    "signer": "0x7BD87F35c7C78D09659bb82c34d92F601b3A3E2C",
    "userId": "745972464"
  }
}