{
  "manageEntity": {
    "action": "Save",
    "entityId": "1364256301",
    "entityType": "Track",
    "nonce": "0x3fe89bb5b027202b27a8ded137d24f628520bc6aee0c312b55de4081f1c4be22",
    "signature": "0xc08ac34d5afe0e670c7d5f4492110649f76e284b0602f5da92079a0351eff9555d3905929ccc6651651f49f9ab06cbbd1aba38c9fcacba056717ef66c42081001b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}