{
  "manageEntity": {
    "action": "Update",
    "entityId": "373466917",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2dde3f649a0b4707b88f310ba8717a5f78668aa863bb60e865556df2050e383d",
    "signature": "0x9c9113705f6d3ea3e3d9550f528f7c842f8fde57a91ef146015b2095ae34039c7444dc9059d2103261d2bb7a7c2cf90f76fcded6290265987693c1b6cdb29fe31b",
    "signer": "0xcc9e1E88B008675950B42831dBBAB89396f1d8c3",
    "userId": "373466917"
  }
}