{
  "manageEntity": {
    "action": "Update",
    "entityId": "940795349",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierawz6xcuvummwqiaiudcej5yooazoaqtvbsdrw4qb42ub4yphb3mvq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":2132229232},{\"type\":\"playlist\",\"playlist_id\":1976178695},{\"type\":\"playlist\",\"playlist_id\":1319861065}]}}}",
    "nonce": "0x7ed06cc54a683c7faaafdb3a600a867be38a19583beb0e425b7e314a051b68fb",
    "signature": "0xf243b54740efc7ac2c04af5f2fc4ef633291a2d260e177cdb10a9bca3e20808266341ad3f173bc5f2e4db5dd1f9c884dc753e0f4a0e53dbaa53c437bb19d9c531c",
    "signer": "0x8D9fF7c77B40B31De4f985c6a8fE761A42f8C413",
    "userId": "940795349"
  }
}