{
  "manageEntity": {
    "action": "Update",
    "entityId": "876735576",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x99c72492983d548c88a47ebf334eca35af21817f416e566629ec6ac16dacdd80",
    "signature": "0xb308273a5e0e3c57aa4b8a765dbfbdabfc43a13f62a605592bc5f1cf6566e04136b1a17b3a47e42ad76be79dd2f51f41c1c36496857d1f6c3972ada196f0a9401b",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}