{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1a9ad75e060bc35b67cfa82b6578dcc00a1613d60c8f954d989e9b2b94817fd2",
    "signature": "0xdd0e151c30c696c3ae289dd84a16ed1824e7999568c33714db10e1db3216099663323a22cc027084436d22f34ba920a722c86c8b11538953c6e758e2efaf8d021b",
    "signer": "0x14FF2Ce3bf23AEeC9C140996251F6f85D8e99431",
    "userId": "53273933"
  }
}