{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "318",
    "entityType": "User",
    "nonce": "0x72c89c50aceea3ec91189eae7f5bac86918ae4401e95cd4ed6dcee66a7323f94",
    "signature": "0x95e6229c2cc5f3c3974e5044f5913b70887623fc36a5c4a1396554c7bf611b225ba4e0fc564c2759c1323fca11bdd29397e6c4d09bbd6b056dc41ba823dd27811b",
    "signer": "0x128141391D60f85f3b6fe6A24f136045F8b119C3",
    "userId": "414725718"
  }
}