{
  "manageEntity": {
    "action": "Update",
    "entityId": "442242328",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4343ed546145563dee1576b639a200368716684e21a268075bf40b3125278e48",
    "signature": "0xdfaa16f7ec8ec5941800cf508b0d3625e120b5421c8a5f00cc4463c1eb5b05e50b90c4a7d514413660f1412057e5ac1c7aa78b4d6b9068e73378a57071a69cd91b",
    "signer": "0xa568c4C22e835d09d80B7708D0032E8D4d0a6671",
    "userId": "442242328"
  }
}