{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343",
    "entityType": "User",
    "nonce": "0x53057d963511b44333ee12913dfebdf13402bb614727bf9433c6f8050b478c50",
    "signature": "0xeb14cdaf2f1479b79b3231cb3d0c18ada0a62ecd8174d28f38a6c120b558a19f3a5f0a743df9305e74b49f3e63da3b7a6a7e17fe21ae8686a02e3b56d0618e811b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}