{
  "manageEntity": {
    "action": "Update",
    "entityId": "594198919",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x76bd55555fa9bb31a6eb5bd3321448913e08f54b827cf336b3dc731aa32e5228",
    "signature": "0x8ae3a6487c56602ff67b1a17f063e08df2eb492104f35149395272399011598c2ea766f0114f28be8773d450611e57708dc6240e0736e7c0412b420c6376ac5b1c",
    "signer": "0x9E7B6a4F43641418e1A2179f802949D607191419",
    "userId": "594198919"
  }
}