{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "556",
    "entityType": "User",
    "nonce": "0x9a07cf97749764893c810aa8fc3ea68ff97147093c840a74401402611c374c03",
    "signature": "0x93bc25f6d813e35f7e7ec07645adcff2e4482dcd3dc2db89b7a2a05a27b285943d6516683ce902b78d8b9658cfa8bbf3516b01ce1f8287642543f51985c329011c",
    "signer": "0x3Ec98fFA47eF7773803b73964753B99Ae2D50f41",
    "userId": "545926315"
  }
}