{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "646033",
    "entityType": "User",
    "nonce": "0x6d2bcc450c9746faed0ba190272367e76885a30d5b401b42cf6c63fc500f877a",
    "signature": "0xf8e404c1948d50f7c2fd1dbae84412c2b9b95d2c35c9a0ee08cccf27a1b96ac13b44e3faf772fdbcf5d0338a260ef07f9fbb9a62ce09789ae6a799f7522940a31b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}