{
  "manageEntity": {
    "action": "Update",
    "entityId": "358671973",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x39899616e350408723513ab5018228909b0f0891d1f487780a1382dcf6389467",
    "signature": "0x7baba8571138136e913c50407f336cc9c43b699b759c3d44f82cdfe0159b641b2cff4c2c8fbe1ee22281b58f365d8756164ecdbd949bfce7a8a1735d6b9fd0141b",
    "signer": "0xB5452FE324305f5726552be1c0Cf8734f95F9e9d",
    "userId": "358671973"
  }
}