{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xe50c88a19d626bc794d5c250ae72d3f51ac0800820865e07c02a94745193703e",
    "signature": "0xeb669b292b010f29ca9c02397705af5ccfb934d4253cbbd39781b10ba4076c241d47d7a6ff018d0b0971563846c05d9b4ef46a227cf9b04ef878a7b469d829cc1b",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}