{
  "manageEntity": {
    "action": "Save",
    "entityId": "271188478",
    "entityType": "Track",
    "nonce": "0x195f0db8494c5b2262bb95b91e23f5719807cd37b21b5489ba2eb0e6b5077b8d",
    "signature": "0x0b6251c6eabf4d1135db8ddc54589a0e1f67c5f556d35d0024f3f80befbd3b6e364d7b13745b982f2f5b93b9be32d1bd734b699994c34f5ee9eb91cb17b2429b1b",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}