{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaf91681571fc875878952152fd94951edfaa552ee5fcda22ff60e776b4539308",
    "signature": "0x4e8c66ae9c0de55f4612706bfcf5165afafbc1fb252ccf97c754214e92bf4b4f15df21f0bc169b5ad26a43556c792d1cc022bec7dd91a7ce67cf901de901187d1c",
    "signer": "0xDB91779D520d17Ce8808898bdE167D14632b2DC2",
    "userId": "679327836"
  }
}