{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "778595",
    "entityType": "User",
    "nonce": "0x23aeb2dae6b61f8615e56109f501d6192ed311d5db0bf25aae0f2ea3e8adc742",
    "signature": "0x1f3824444bc67ec7f60533ea22716c26fd88cb3f734c0436a989ace57b6aacc4472ac2d361a3e902741166f3b88a75dd33a7efd4612e15171f88f4764915bdfc1b",
    "signer": "0x69f11622ae51A55c34462DAfaAa5b4E7e77AB644",
    "userId": "513195827"
  }
}