{
  "manageEntity": {
    "action": "Save",
    "entityId": "69190870",
    "entityType": "Track",
    "nonce": "0x0c25e0b796e8ac021d9f9922d73968d8c9eea61192194d9afc7a04e803eca486",
    "signature": "0xe7627d700bd2831565d360a24656b97ff051d562321c5ee8e1bff546ec87de5c4397efbd4b12a0a8ab138982ab0b5ce9952a9300310ee71bcc5f6dffb73bdeee1c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}