{
  "manageEntity": {
    "action": "Update",
    "entityId": "275350856",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5bc211da1b77055923ace7f3fb9f8b1f478f9e424be14f46282ba7c76d78ae8d",
    "signature": "0x93c9be3d153cdb71f2367080741abcc7d222906fb50aefdc69a18bf609701e2479b984072d2ef22cd6f25de0252a7e5749a123d8dfa2ebfa70140c7b337b6e861c",
    "signer": "0x99cc71DF4121e0a865e7D094866224A204ae2b44",
    "userId": "275350856"
  }
}