{
  "manageEntity": {
    "action": "Update",
    "entityId": "950485788",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3558ec19ecf67a6a3bc4394a2cd9d7e29683e5fa3258282ac47f70f5d6b0027d",
    "signature": "0x8d5aac9aadad3a2a34b87be9d60dc17a0827499150c9d27ed3f0bbb13dcfbc604e1a6e62f1086abfca6c574c82917df02fd750f83a804080d332f097094fa7c91b",
    "signer": "0x6CF29C21c9C0b405C773f3605658C095Af4c28EF",
    "userId": "950485788"
  }
}