{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1856608",
    "entityType": "User",
    "nonce": "0x952e89e5922fa5ec55364962eda76565708ecffa71bdb72bb4e098db3c09bf21",
    "signature": "0x828af431190b599e1fb9c0c795b80f4851f3a829c119b26489204b706519f80d06f2e383d98e9ca02bb9b2b47a0493adba68d739d6ba48dbdbaa282796e3a8421c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}