{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x01ec19c273c844fa33f15121955b407705a579cfe0916506abcc3f9f38029635",
    "signature": "0xaf9e7fa4128ba43497ee534863bf799e75e6924dc54838f022aea04b80b9924a3021d9a127a092d921c6b509b62cbc1b13cfc500d4f4b0812d5b20f7905a155e1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}