{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "704325",
    "entityType": "User",
    "nonce": "0xbe40c5b57ebda58cb642d1782e0379cdaaf5347e513a35e7afa73eb19e3d119b",
    "signature": "0x9d493e912c3c1860a9a521a9b8f0bf93319976be7b8b80402705bb9f7be548fb5f47ba8814874b08ed396ab275e58d9701148ff7e19cea51c71c428020de192d1b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}