{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x74e2e5693f6df4446d6e2b47bde7b3e4551dd2d3f88dc1ce1dd0ee15026cd6dc",
    "signature": "0xe23753a0711ca81af2665a2aa10b323f87e60f651d69bb09a8b15270a601dab8631aa2bacc689e8c7f026f7b590b7216852ef5d7533b666707cac1cd0c8cf80e1b",
    "signer": "0xD2eF9adE0816c6cc6916a009B787FEE1eF7080d5",
    "userId": "395415088"
  }
}