{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "724314999",
    "entityType": "User",
    "nonce": "0x306b78d3616314a81310566f0f65a76a74d73633776b8a786cc9a97a78fcd854",
    "signature": "0x933c873d611b9591028e999513ce26f615cdd2983ce37a3349b5852ab229f4d953eadd3f5507f57f7d95861d71b38f11128f5df27846bc9470c865afb74a83c21c",
    "signer": "0xA9C30cc9EEAf368737C2840254723a9F553f3cD8",
    "userId": "114153440"
  }
}