{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "999692142",
    "entityType": "User",
    "nonce": "0x879fdba47816d4431379973754e3dc58dbce48208b1d4e81181f78386627f94e",
    "signature": "0x3588e7879784e92fb920a0535734cd1ae7af2b91665ff62f877c7f97c6615da777514cdb8e7381b1d5c2e9ad325ba80400d6aa93061bbb681686307cdc43a1ed1b",
    "signer": "0x2acBF90b188BEa0e543bF348864E8a02E3814819",
    "userId": "969601314"
  }
}