{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "486490947",
    "entityType": "User",
    "nonce": "0xce30d64b4b37b04ad99a5634193e058e5a1c3bb81aae71240c9038edfb30e1e8",
    "signature": "0x0f39e6f1d266096443bf74744f79ca29047ec1f91cd387da23aef9bf63aed5026e2f0b7f64f81aa806e010d1838e11590c4b6a044aa63594b2e4758085e1c4c21c",
    "signer": "0x16D3bf5a80bAfFB2f1550d49b1203D4CA532DA1C",
    "userId": "1994482"
  }
}