{
  "manageEntity": {
    "action": "Update",
    "entityId": "776753824",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe3a73a3ae83d8b56e3e27dcc184f9c06547bca88b5b3cdc79bfcc8b4e1793cf2",
    "signature": "0x5b4be0341f986e269352931c4d9bdc8fa05ece02682da7c8f1fd6e65f6ee12cf52de7be8e9ad807de3395a22d8c12a103fbdf0cc3bedca1b7b994f217a10ca221b",
    "signer": "0x28d35fFb3a1A2061F15257d5A1f4d01C3E69A01c",
    "userId": "776753824"
  }
}