{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "17689",
    "entityType": "User",
    "nonce": "0x29749a8cc4beb98fe4675f681d9ce8ddb1f55fa0b072b9d59d938ce94edb52a2",
    "signature": "0x00338b56f9aa06c5edce330cc963ad93c5bf92ae5740b7a407645b132dbc4de5271e4e7ea86c46ff35e6e129a025324a703f62e3fdee48be6a51d77fc459258a1c",
    "signer": "0x90d627796C9E2071AAd9F8C20f6dCE95587F6d13",
    "userId": "560619378"
  }
}