{
  "manageEntity": {
    "action": "Update",
    "entityId": "762890950",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5ac728caea64b8b4aeaeead785a691b53418e7a0b1301b352da6b5e8ac7da520",
    "signature": "0x4d081228a19ebc5f107690f5069e2de8c23c981e9b2f6ed3dfe7c6b1272cd7fb60b45a8d566efa25aa4e995effecbc23d41ad613560969bc28dfc20176b2a5a61c",
    "signer": "0x16e1Cec3f961a69130Ce9A743BaDc26776D2a3C0",
    "userId": "762890950"
  }
}