{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "486490947",
    "entityType": "User",
    "nonce": "0xecd9a93b362736e86f34809cbef22ed2eba7e0f89be134ef5461fecee532bcb7",
    "signature": "0xcead2bde40f92dd5e32799cd4e86ced9a2c16613dd9f544a4ef436de5737158e5f8e9c44ac0dfc7f14dc9ad9d302633de84bc57d6fe82c98a03561159569d9661b",
    "signer": "0xA5594f75935B53086a8f3231b314C131605FEDA6",
    "userId": "140185425"
  }
}