{
  "manageEntity": {
    "action": "Save",
    "entityId": "8755185",
    "entityType": "Track",
    "nonce": "0x6c3d084da69e2fc205ed92860c57a0bee8490e07fcb1c732b04819d69c747423",
    "signature": "0xd5d6833df28326b6b7872a91e5e3bf7baf56c1f47ee1ce9b7b0ce74cf465887001cbbbd9457354dba489d767af3ce93f724082d371e69f3f6cef1787d0eb8aad1c",
    "signer": "0x8FF85C5AA450a88f13FbD5170e24E2a3eFF32518",
    "userId": "311829956"
  }
}