{
  "manageEntity": {
    "action": "Update",
    "entityId": "153573209",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf54e16e4730bb5fce9e8c1943fd025fbaa274b09f64ce29dbb0deb2075a20662",
    "signature": "0x39c39dd51daba6cf5560f5b889a346271cec0487bdec1750b1c5ee219bd9747b5d53dfc27690df980a028f6aa93af9d77cab12f313bf8df1ada8f268559510fc1c",
    "signer": "0x1fc5318507D25c762d4F8ee26d7Eb9cd66897693",
    "userId": "153573209"
  }
}