{
  "manageEntity": {
    "action": "Update",
    "entityId": "90770329",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1d699156fc1acbf4a14cd1df72c9486ec6464be87a536e9bc961098dcd98ada8",
    "signature": "0x8b26b15e8a7a3b49518474aa68606e7eb6287102d17ae6643327fd3cf78eba3d647a599e337635e55369d509a0735094dd3c9f0e58dbc7e5354c5e1246987fb51c",
    "signer": "0xE178a8926535369d63e75CDabE74c05002609f07",
    "userId": "90770329"
  }
}