{
  "manageEntity": {
    "action": "Update",
    "entityId": "321234952",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc6bc713bc06480b1e34f9669c5ad717f387e868765d193d3df21b5f3cad9a204",
    "signature": "0x2c1b808595a3773cd30d3e5cf5d096a50e41f2103c5c2787ca59b52eb958445f3cf0b6ad79242e0f8a34e0b556bd599d40fdd2a6e32268aa4583c845b1e773851b",
    "signer": "0x7DB60852FEB464b7285eD87af392a6163416aAd7",
    "userId": "321234952"
  }
}