{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728155533",
    "entityType": "User",
    "nonce": "0x5b21efa1d306508985f4e64ea75b9fdc8634590f45c104386ee714f160a74bf1",
    "signature": "0x1453846bc2667842e3b2970db8401ad7fc89cbafdad87182283306ed9900727802654328a4248f7df0c17a556c464b82318cb261351fb6373d5229b9fcb5fcee1b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}