{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16564",
    "entityType": "User",
    "nonce": "0xd620b86bacc437050cb097d3af4c8e0ea40cbfb2c50fc9c8b995dca17387fe12",
    "signature": "0xef070889d9bb1c246eec377c8946df5bcc2fba59a2d13c94b9d2bc11c5d172240e411659bd556149b02d6f9de7fad4187342522a3208673ea21267b001c2f5b11b",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}