{
  "manageEntity": {
    "action": "Update",
    "entityId": "721987098",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xecd27b52ab3e4c05b247a825cc62c4fd868b4997d386b46b448436b73f314d8b",
    "signature": "0xe82d559f6c1cb2b74651dba7e8686b8e44c0fb422cc810f2ce408ba15c8d1cb102bf88f074d78c5592556d1d72a1555b0019fc57ccf5682ef0f600b17f18e1301b",
    "signer": "0x4c2B6D597D288449d9F215489E66f1cCe1c85B8F",
    "userId": "721987098"
  }
}