{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18192",
    "entityType": "User",
    "nonce": "0x15db104670dcd8b29a862948533a43568bc47e20c9e11d26990f44dd6302212b",
    "signature": "0x13a111086b8edc8391473a44c660817793d90d1e1e2eb45560a7ce41452f4970399db18e67492026fa95fa90413dd065d4709ced04e815fb860f39ee1831665e1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}