{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xefeffc3034eea11a9f76929a4bceaa2559f4c38e561b4c21d54ebf685654e195",
    "signature": "0x3101d4184addb017cabe798cab38f95bc71846fdbbe7328bd6d588fb90ac284c5701b81f1dc43b2bca003a16225752281652cefffc13c7ecb66040a03ecb992c1b",
    "signer": "0xE1606Fda4793C81543febFfc652aC7aBB1a33faF",
    "userId": "457856694"
  }
}