{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343431",
    "entityType": "User",
    "nonce": "0xf00a8c391a4405a23870229c9e98eedde1d677f55a78b43cccc5a0904a36d4fc",
    "signature": "0xda8432188e017f0964a83c074e4f0959d51bee7367d87d7dd62e90c86119886008c844bfe2ca3d283b99a727134d09d0a0d905e92688ade40df664f58dc16c281c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}