{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "111988",
    "entityType": "User",
    "nonce": "0x57a51056536c8a79cd82f506e06c8ce1c5d85c8d4ecdf905e1bd096c650ce08c",
    "signature": "0xe4f58ab6b5fcaca15971a309e5a70c4ce281cf000113502441a7d3934616175b4ea5b58ce52ca89d6beb1ee0c65ab3ef2e025f4d0b6a5051802f37df23d801591c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}