{
  "manageEntity": {
    "action": "Save",
    "entityId": "1777818342",
    "entityType": "Track",
    "nonce": "0xafdee2b4b9e840e782acff888b1cfc95fbccc77a552a3f86e666edf9467eaf54",
    "signature": "0x5496028456f9098cdeabccd621cf068e4e24de5b1a2805a6e4a4c80bd2911c1a48cbe0a97dff9154ae2df6b104de26a3353f7700681ed7ef4bd61adaa95e290b1c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}