{
  "manageEntity": {
    "action": "Update",
    "entityId": "901822438",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf7c6175f306c49fbb42f356b185f7e438de0d3dbc33672ec6aa5e4bd1fdc42e7",
    "signature": "0xb01af1863bc863b5b4539ebdbb80804d9bcf835e504c94fd7df00d97bf5b19fa641d3123b3ecbbb62f5c3906135b00766d06ca19929d5070fc6c1181260d21541c",
    "signer": "0x0CD8c65F2d0399B442E2f8907f48BC34f1Ee7615",
    "userId": "901822438"
  }
}