{
  "manageEntity": {
    "action": "Update",
    "entityId": "487939004",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraz6xfckwth7kmjai2dyitqzs7hzpqxmjldea55py36lzmwowfbrha\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1236104233},{\"type\":\"playlist\",\"playlist_id\":1219921829},{\"type\":\"playlist\",\"playlist_id\":537344379}]}}}",
    "nonce": "0xd74edbb7650f3f2aefc604a38a66dcba5c27fafb8100e8e7e08511e9c116d6d3",
    "signature": "0x3767ecdbcc52aaaa56d702a7ae509a9cdb72fac4664bad07eac45b7be3d5b6e569a5a9771d6ebe563f6ddbe8247e77862f0995843bb038ae5bb65e3c9d29dc781b",
    "signer": "0x3A25162935B033F53f1C057B6EacdFA4472E0400",
    "userId": "487939004"
  }
}