{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54988",
    "entityType": "User",
    "nonce": "0xed777caec18a5cbde2618581211e72dbe6a1a3ace2418d21768f4cd996aae895",
    "signature": "0x18b34182e2af1be580d2063f591a87d30ebd73434f1b235852c76399802cc48e721da9bbc1aeb05cc76a5ef27a69cc7f3900d3a221e410bb7e56083c0a810c261c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}