{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4af85aaf27b0f2145ef9571428d0d390f4977e5d0f74e6c7327eed4a0784d9c2",
    "signature": "0xa889950902a122d1c0158420db228dbc6c1c523b78f9c124c1a3865300e3f6c820bbc87e7ff84864dfe4d8188c033a1aa369784446ed6e55326921cc8b5d984a1b",
    "signer": "0x3f7EcF6230dA3e0c38Fd4c035BDF556206932afF",
    "userId": "176703689"
  }
}