{
  "manageEntity": {
    "action": "Update",
    "entityId": "876735576",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdf7f0772461d5d34c871ce4a10f5cf3e2e750d6a2dc2afda792fcd734ad30abb",
    "signature": "0x16336541fe0fc0ebc603542ff1091904604c22d8e326ee7f83a079c5e5721a1341c48cb4cab048cead74660b0feddaab4140deecdb312946ac8757774b57253d1c",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}