{
  "manageEntity": {
    "action": "Save",
    "entityId": "1365914718",
    "entityType": "Track",
    "nonce": "0x665316901c95538e5b312065a00325c9a554b62a7b7431e61ebc07712aec1147",
    "signature": "0x43f29606a29b1dc6996c788dd3be9e1b06193353e179401b6b11b77dac3f87821f8a10b2d7a46acdc6391f3eaef81393434a448f15178cd98a72d22190b606411b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}