{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355715",
    "entityType": "User",
    "nonce": "0x40fbb3283bc828db43c9223a2000d88d78dad684cf2ddb348a886138165ef705",
    "signature": "0xb2e37b9a9250e67c7337cad0f68e43376458381cbfb0f314d283e2fe84d5f52126ac233a387512072d0cda83d092de16965d2607185a39a0707cd574bba95e141c",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}