{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb75f94024f69dbc38d3a19e6f11a1e0912488666393af132115db028275eb4c9",
    "signature": "0x585a5523ce65c308584ab967f64080567265b4f8401eba8b72a5d8c3675596017924108fe333293534ff484262f633b7a41db8e673a864263c685f7a54aff55d1b",
    "signer": "0xd542A2905398E2bF1848a178C3Ca92bc6Eb5770c",
    "userId": "328793585"
  }
}