{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "537944538",
    "entityType": "User",
    "nonce": "0xb870e126da6cfb4ca4ee181db1e8dd78c2fd2fb31936a83079ef911bfe175ac1",
    "signature": "0x0bfef7d42959891c6d4b97be282d0c7f69e0fb12cc30fc58eaa825d82dfb8e034a4e53c60892b39509204c3288018dac18f33255ecc5299d184910c25a1ea0ac1c",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}