{
  "manageEntity": {
    "action": "Update",
    "entityId": "192506779",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf40f0ca2a3139ace076e126daffc017bb01148781c82a7601141798b03bd5edf",
    "signature": "0xf4cad73ff3a5875f94568eba8d8e2c47ad1e64be189e1527a9db2e833434cdc828dc763ceedd801797108510a46465e8c612a37f002cea32f0b4dd5068ad438c1c",
    "signer": "0xEa50835C663CdcF6C7F126584851d76E00CAB10A",
    "userId": "192506779"
  }
}