{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "536791428",
    "entityType": "User",
    "nonce": "0x637ebfc2b8bf8d08aa60d852f0d6ec5e90e5a196918ecd029773a2ec2b9ccc63",
    "signature": "0x9171162596ace69bff2df3ff0264dc810847df697fa1b537ebe1b6a67e7a19cb457e363ee676ae31c90c9aec0051b0cdbd9ad159f61db693be85940fae6cc4f91c",
    "signer": "0x720537125Aa4b451266209E0d508D7576a4bAF94",
    "userId": "942771296"
  }
}