{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0x3fb7b67a824c8ae38dc9eabb52d64212b5620233f4b79a23d9d33e00794a7c64",
    "signature": "0x95a9381dca53bf8955812faabe996b241d921090323d7c8ebde9b6bad38f06fd4c528cd7c6344fb336abe928a5e83dccc203ddc229cc1c4928d717934aba90161b",
    "signer": "0x50Fa68E2236737fa15f471F72A9AD1Ea99870D8c",
    "userId": "336906"
  }
}