{
  "manageEntity": {
    "action": "Update",
    "entityId": "901484303",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc255e276899f33cda68eca9fe6b010826c4ac17b1eba2e77875e2b8c818b6127",
    "signature": "0xdf9ec2ee8cf5669e49d1c5cfcf7442cf3aef673b3e2d4df673f236b17b372dba7e459711faa0bde3b61559f09c10d428989786fd24ce220cf9838b5b09f90d9b1c",
    "signer": "0x510515D9ACfCe56aF1F9b321432fE0D3Df77Ad97",
    "userId": "901484303"
  }
}