{
  "manageEntity": {
    "action": "Update",
    "entityId": "723186160",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xaf4cc407609d8afbaa16166702c6637addc4930fcb43aff7acf4fc8ae724588e",
    "signature": "0xe94273ad3c2862d7fa28a5d6a05996f53e0b5b83aefd0ba29292c8e2c28845495cf7a8e5c999d85f65995eef64591ca0aa5c95f9a622cfbc3955fecfe4abdd8c1c",
    "signer": "0x6B9b16f42DDDB7E3781E54F27748eB873219D173",
    "userId": "723186160"
  }
}