{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "294705",
    "entityType": "User",
    "nonce": "0x003ea652ad035a7b3e01012665d8fa174a120bad3f4e05086376728c69bf0f7b",
    "signature": "0x1675c6416c74798a982b8768bc7855ac034a8e841aea9094d1c5afd46e67c8273874537840995640f373baf7633d05473d3d1c065f6c9f5c012ee1cb643265d31b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}