{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x37feab6420b55c47dfdfe457c24a3783912ac2a7d558a9a18579808bc0c9153e",
    "signature": "0xfcb3489f9d16978dd0d587e8d5c3f1140c83db156cb0001080bf727814bbee8e671b1986e60cb74d801a1f5f7fc0e3312ac9a4a25c36e8b1f83a671f39bfdf0c1c",
    "signer": "0xD747540FDD48b0ADD908Fa54f06A2d2a5034d858",
    "userId": "725808521"
  }
}