{
  "manageEntity": {
    "action": "Update",
    "entityId": "138313310",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb499347c304babdead8db13587d12d5d87e04a4e0582b97287131a17daad070a",
    "signature": "0xe603526e2d08bf28244ed279ca6cf3a5820f9ba8e6ef0c825c4d9e04abd7fe857e64e907238a848d98c950270f8920fc7d803b640ed1847774707ed941c9cfb61c",
    "signer": "0xa9f9400e53E0081283EDfC6a5d4BAbA3a79a610F",
    "userId": "138313310"
  }
}