{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8b90652b13d41572d7f7f6ee0c3c091127458e11af5e47277b21a159228449c7",
    "signature": "0xf548cefc02762aeef20d3203876fc7c777e8120a4e7207ecfeafc19e94e0a16f47e62f032ec3ef4a55e5e49d7d0b57ad30e5ab443126d1d1d43087384368a4231b",
    "signer": "0x175A3bebFa14E64C549CAc2962191B2B8C788421",
    "userId": "6270901"
  }
}