{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x84f10f2784dbafb383a0c52b91b1b2d7d0d6ead042a6d7033d3595315cc39176",
    "signature": "0x99edb8f8ac069dde67186b685275d380af1d618a9798c747576d3d3984dbf00e5ef8e9ceff88ea99982fdf25d4952584591e4e5ae08a016b5632b80d4a2492671b",
    "signer": "0x7c8f2818C1D8bfDbEea93cbB0632Ffda4E5Dc18B",
    "userId": "107348849"
  }
}