{
  "manageEntity": {
    "action": "Update",
    "entityId": "387010651",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x17251c65168db367d4c2dde6241e3b1feed403915f9aabf9a9c5e069dfec643b",
    "signature": "0xe4a63eadd692a6d18902a6a27b26578ab270689f3817d54b96ddd84dd7256c5e1e97508288ca05beeab6708b3f66705b8ff4a4a72ac4ef64e2d7ba07a2bbd07c1c",
    "signer": "0x8A17A6d48FBE1BB8C240a485CfcF2ff03092f13c",
    "userId": "387010651"
  }
}