{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5157",
    "entityType": "User",
    "nonce": "0xccb3144bbbcc943e0710beb4f8c3e3434673822285416a039016c63550b322e9",
    "signature": "0xd848d9be67358512ee97514719bc25d22aa9847b9b1d28154c872369e52e54101c3cdf6dfa2ee46a29b13fede09e207bcaf6c60e7b5cb8e7320f798831f9b3eb1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}