{
  "manageEntity": {
    "action": "Save",
    "entityId": "2111470888",
    "entityType": "Track",
    "nonce": "0x03e72d6830918ad7f917563d56ed1db7cccda31fc2998ba2e6a517b5451b192a",
    "signature": "0xa8a1eeafd3f6215bb2620bf97892eef8da951b25dec8367e9e370fd7e8924a1a3b4f4916cd91847697bdae1b987affc64758a97a643d8143d386ec194a63ce451b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}