{
  "manageEntity": {
    "action": "Update",
    "entityId": "173866575",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x314f0402df94d5a5b9e2461a2dc5d6c6c49eed427caa7400d73a0f312756a9eb",
    "signature": "0xa4f3a5fd729a1a50b3b549681b3a8e836e40ca88fae4236e2965183ce3daf04c10a2564234d240fdf1f5432eded4ea707750ea07b57daa4b3be2fdc0ba8b769f1b",
    "signer": "0xfB916D1E787463C1799c8F986F0e19A875A71485",
    "userId": "173866575"
  }
}