{
  "manageEntity": {
    "action": "Save",
    "entityId": "1266707732",
    "entityType": "Track",
    "nonce": "0x0958a6f7d299da348d440c75c4cac0a5c9bfe123588b7a2695f3963110720f36",
    "signature": "0xc1ec102a892b597282835dd762a61085a8e889be1e8b92a3a470af07a327eeb259ec6f9c1ff68f246c8df34eb5fc8468409949add191a7af30facb184e7ee5bd1c",
    "signer": "0xD1c35F3fe36F06eA1eAC8Afaa9bA42F76fEd23A9",
    "userId": "918920591"
  }
}