{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "672",
    "entityType": "User",
    "nonce": "0x2302186a6e6ab67bcc637dbe7efdb887e205ff7195b0cee03cac22f0049313f2",
    "signature": "0x6d660278c50a1be0abd8d71e7dbdf984c05b1258c9b43b1e8893457c54c862e04097d9b44eb590289cc1e2b72ded3946a7d185dda8cc7883e732294a467daebc1b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}