{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "647341",
    "entityType": "User",
    "nonce": "0xb588b5de2081a2dbebe86927a2ca1dad17c17437787e2366dec40963c2158f21",
    "signature": "0x3a4876047c4b106259687bed9316ef4f2b0efe3db874bc30148858461bffeef815755e0c4515de208734b7fdc839966cf43e492b43fdfe5bbd00d64edc1aa6ec1c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}