{
  "manageEntity": {
    "action": "Update",
    "entityId": "789121538",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5baa6d2e693b0870b32a9a29ddf537a6d8ef9cdcf9cdf0d47f8365cec033f5f5",
    "signature": "0xe417575a5f77011e51b6abaeaec03d789f3288c7b1c5e30eba9db34202e57c40675ab3be730848383538264fc535d01384248ee11f98113b256a8a261a90ca4f1b",
    "signer": "0x06902ed62bf3DeB2BA8Bb75F08cE93c1E87A7Ec7",
    "userId": "789121538"
  }
}