{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325172820",
    "entityType": "User",
    "nonce": "0x25dde6490738acf59f35a2b76d05d0f083fadc1810e8f3bc68e670bf18bbd4e6",
    "signature": "0xf022c237c7b8cdda982e1331561bae92e18ae2f478892b7155afbf834e5eaa9e744df5190549a9e373e569a2d6de22ae45fc994235647f901f841f3a7311a0af1c",
    "signer": "0xc4A500E17D812B285447720CCcb7F8eB148c91bd",
    "userId": "256479919"
  }
}