{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xcd54c9b680adf29b8cfa887d0a431b0a8ac65c7754e9529cd12be555633467cc",
    "signature": "0x4ecc89fec30a8df7a0140da86815b7102b005415e7e14abe3ab9cede1baf76b52b4e19bf0f87a69f97f1661a9febc9741e69731230858c5a1ab7d583a01102f11b",
    "signer": "0x5a3D8ee650e3AC49E3814789a0e2783f0bAFe395",
    "userId": "951735298"
  }
}