{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307756",
    "entityType": "User",
    "nonce": "0x3fe8c67cf552efbd11c1c82098a75c2bd264f5ce73efd1fd808b885d4e8b118b",
    "signature": "0x0fab8dfd6a230cb332c275e55e7c182a902102360b0c90e3d7f7dce84f45543b1fa260569e711d6c917125fba37e6eaa0abed58e541b26d70cbca2e118b4a1fd1c",
    "signer": "0xf0aE5dc768355f3F6FD6d36eC911c860C8904Fa5",
    "userId": "405896524"
  }
}