{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc12c5beff562719f67aee80a0532e39a726db3287d95a641bf442fd118a8a0db",
    "signature": "0xc3bfd480704a4223492961de9b117fb43ac1a3654ca7546256e090e9b5f4c2744d249c270cfc1fab519cfe257f5be70928cf7e508cdfbabe47087785671f7ded1b",
    "signer": "0x57cAEe5eA82f42935417a3Ee55D1a1c8E8205709",
    "userId": "891501053"
  }
}