{
  "manageEntity": {
    "action": "Update",
    "entityId": "664129502",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4347769c565b61a7351a8e3022f7f1c59469dd6f58ae2e9b2c7cbde7cb1263f4",
    "signature": "0x2cf22a01f8d39dca7b7526e499286cd5d04a43512f7862b9a6f263281bb1e17b74d471006b79308e846500094cc88c25955ee6f1668c2303bdc1cefc1921032c1c",
    "signer": "0x97C0F2400420716C8E51fC299bAB6e9Bd2d337cc",
    "userId": "664129502"
  }
}