{
  "manageEntity": {
    "action": "Save",
    "entityId": "1768022861",
    "entityType": "Track",
    "nonce": "0x20b4c21eec9ac7ed0fd6c958b707437b1d6672e87e8d7d389d557e6e0a92e337",
    "signature": "0x094b15d04f961c51cc9d3abcbdd2b1792404df1b1ac65593c20cfa3baeca5d58691ab1ea43c6abb40619595f9e5218627045e243e3be7cc872e70f46b5945a7b1c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}