{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "406225571",
    "entityType": "User",
    "nonce": "0x4c331d31a249279ea5b27c2b86cb961952ada7481f89ac5696dc025dbcdf9fdf",
    "signature": "0xa775cb8badaf7b819037037e164fa386744eeaf7ad354a1e8e81065ea7c6b7997e2d68651f59f72156e9234849bc146e633d47216edcb9f0467c8f85dea8778a1b",
    "signer": "0xa185Ff45de6FF68eAa1d7ceC338cba250810134c",
    "userId": "54166466"
  }
}