{
  "manageEntity": {
    "action": "Save",
    "entityId": "808225",
    "entityType": "Track",
    "nonce": "0x43492d126c594a5102fb10d06e9ccd93ea673603e3148fbd8415d10c91040e83",
    "signature": "0x4baf3fc04a156ae8c4c79cb60ddf181afdf24dad394e46b630aa2862c112605573e84e347b83a5282f5e699e5314e0ed5072cd6bd77c359eecced7f3581086b61c",
    "signer": "0xa8E11aa224d2579f5cbdb912866bCE84Eb10f9dD",
    "userId": "951616224"
  }
}