{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "180639988",
    "entityType": "User",
    "nonce": "0x137c7ad40ec53c25b438e39bb5c72d55ff6343845f9383dbcb131d5ebf4ad827",
    "signature": "0x5dfa1b1a88ce96b74c88ebbf3116b81a18c17c9b64d148dd4cef02ab06b12eab0ab1461c92069af87b23b37f9745250196418a610adb8f0f79d990d490d5d5df1c",
    "signer": "0x038f9CA74f1De4A6D94d94c4C354E1F5B11fd38A",
    "userId": "453233591"
  }
}