{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "847894269",
    "entityType": "User",
    "nonce": "0xfd0e7d6c55c7755cb887eaa0ac7b57259cee70f579823bc805aa0b9c30703dcd",
    "signature": "0xa215e00015332503e7aafc1796f616f2191dbf9fe9f690d0e2a460c1b5090c193555b52d4ad3cc9b4d163692aa23ec15c5996927dae2d97ed7e07481067083691c",
    "signer": "0x0d0E0D19797534AEF52736C60B52793E9f88e24F",
    "userId": "603294620"
  }
}