{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x647c99f3fe8a88e5c522a665294f00ccfbba78f56d2df95be56eedcced1b360d",
    "signature": "0xd467330c399a0d79f2811738df5bea2b983a97360686b516df3f8aca16cb9c5d0dc648e174671bd14a722abe17387d5f3b38dcc17e81dcc9a98a047e9a7a3b571c",
    "signer": "0x083e7805c2A3a6DC640892099888b4Aeb83E2030",
    "userId": "574551044"
  }
}