{
  "manageEntity": {
    "action": "Update",
    "entityId": "556008552",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa37f82b60f0a40f1d81997bdbf1767b70427a819a0c0ef1eaa5ca9c205cc6fe1",
    "signature": "0xb87ac28ea452c525eb0cd28fe6613bab0c7f7cb6e856c3315f05d54fc0d2c133684113cfadd38a22fbf2dc8c8c4ad1d65c75a563fbc2173a87610cd05171c0481b",
    "signer": "0x19166AE09d463E514b0aB409C88EEC06449e0Fe2",
    "userId": "556008552"
  }
}