{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "475275462",
    "entityType": "User",
    "nonce": "0xefe8bdcb6badc7f01579546115607af0d54322816d38895e987614a092bbfe65",
    "signature": "0xf4d898a63ada4bcb9c3dc0be4917a1acf5e27e1b8951445685cfbb386b1d0df231b24ab5ac81b1341dab1a07fddda174c0355349fea49de571e4f567ee70ba161c",
    "signer": "0x164E8a2C2a8C30231940C356293c7038E5DE7ABC",
    "userId": "354993"
  }
}