{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557388634",
    "entityType": "User",
    "nonce": "0x651992ced782432c6c3cd65c81f060225c946f39421aee8f7ea68f83cf80a098",
    "signature": "0x2f55c45e988525515fe0955b83ff82993337b29f78bfbff72b47cfdb18032b59453edf4e8a14ebcae3b93118118879dd5c7194f25f4eb1a87fbc5e9a5723a93d1c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}