{
  "manageEntity": {
    "action": "Save",
    "entityId": "1675269060",
    "entityType": "Track",
    "nonce": "0x188ab0a7bc2b7b01337d781d5db980ccbd7429dc3e6de32567c157398a191660",
    "signature": "0x074bc345986fed43797b002fafd0be844b50e2fddf4f80b1713cfd4100cb71db13a2a5c12b744d0b1a6f7421af8cd559a3da9bc607baf7f3a8f4c00dbe831c251c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}