{
  "manageEntity": {
    "action": "Update",
    "entityId": "721987098",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfaa8363b6baabd14240e4c16f3ba0d2dafb4bd7c66b9a30fc1c0159b1f4ac1f3",
    "signature": "0x367b85b4e862de6e1f2190c46d1339ff273c27e372e55ead4994f48ca888d7933e3f9bd998a828f272e9c9570ff187f9d14091d11256a7db0043626cc71655a41b",
    "signer": "0x4c2B6D597D288449d9F215489E66f1cCe1c85B8F",
    "userId": "721987098"
  }
}