{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "714646433",
    "entityType": "User",
    "nonce": "0x25d020c0b79e6aed9df5e0f3e1419e027360800e23e360f26ce4943336543330",
    "signature": "0xf7f3863053d2fb90737ee9757a7b8e5cbab65a099ee334ba98ca6cd2d63a4618516c72152c3efe8eb3ddb84824ffba3a55dad6e9fb3658aa47b5eea7f6e85eb81b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}