{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190351",
    "entityType": "User",
    "nonce": "0xefa3b99d1ed49991dffe79f45117213636af62a3f7a03e50e5f5a23973eb4d0d",
    "signature": "0xdfd5ec12c83ed9d891e12ac24d70eb5d1b7e822a56fd4f63a76ce9dfc8cd2ad059b9618a6395ee43b0e6252496debbf742b238800ba345d38688c2906517a9591c",
    "signer": "0xfc7b754CBb5e42d94a7064c0FD31cF7c5c99afE5",
    "userId": "992932046"
  }
}