{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "403667803",
    "entityType": "User",
    "nonce": "0xd91afa90095b68098f8c478a6fde74837587065ccf45b1f89af51f092f16912d",
    "signature": "0x71814b97cea31cf2519474e7e2df86b167a36f400edfed3f6b3a2585b4eb6c0547536906105a82b7cb57b7620bc92a4ca45568e9149d788659861be41d35d4051c",
    "signer": "0x6CDB14bB0E06b4Dc606A00A022c8bF4229E1699E",
    "userId": "1897442"
  }
}