{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "120328011",
    "entityType": "User",
    "nonce": "0xd8ae9beaa463fb9caaed6d609ca0a2c083aa93e345fd6d9b1b00b2d8872f974e",
    "signature": "0xac1dccd0684886a840dcf959da619353ae3643f92d45e3fb725472a121eda6311f660da3b9833f3c11a57f981259836e8c3157ea57c451df1c3827f13f39347e1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}