{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "475275462",
    "entityType": "User",
    "nonce": "0x4ca752486765261d8f0d98105b1e8b7f0ead2695552fda0099c3195da7a60381",
    "signature": "0x895efac88cf823e1d34a9805a4db9217576f0fa1e9f6d50d8c0225eec4b069354c3497c404e38c5e89bc3cd6d7a51b1f675557386e513de088cf9917f97401661c",
    "signer": "0x29DA29cFDe586469112dA8593Fcb9B91e30468e1",
    "userId": "121018469"
  }
}