{
  "manageEntity": {
    "action": "Save",
    "entityId": "1117651372",
    "entityType": "Track",
    "nonce": "0xbd26c43e815f94117fe686beeef4edc70845e164e15102c03ac95c16f5f545ed",
    "signature": "0x4725754b73624731acacce51375ecfa555cd49e91051effc8ef8a34f486db6e719952cdc103374d5dde73b35abf33b5c6025abc5c0d3e52fa9903233974aba7c1b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}