{
  "manageEntity": {
    "action": "Update",
    "entityId": "876735576",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x53f628bb5c5c04e450e82db2580480b35c18c418718820c7af826ba1cc08e195",
    "signature": "0x26f0e4b7a3df3d8ddb2daa4f01ea0ba747c21b639f0edd1ae0baf5b8068fa38d05e2fba972918fdf864b3149551decfe01762f2e14362d44c5d54e6cfbeb43311b",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}