{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xed67c2fa30bd22b078053de06ea8d44fd82c67447dd078ccc8ad1709368c7d89",
    "signature": "0x00661793fedae66a73dd0f50e8eb5dca9f4da772b6a69d2d6ad69a9d364a3f354a89cb1ff073796a8389e0a934ec5a1edacc24745c40915946d8a446ccade2081b",
    "signer": "0xBA76F8188C3B73B4282D2eeBC45E9D1090AB8dF5",
    "userId": "92469189"
  }
}