{
  "manageEntity": {
    "action": "Update",
    "entityId": "945558612",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdcee8209da6aa15dbc795fc60adfec4ca35be20716964b317f58f0d71e969aa7",
    "signature": "0x8d75e5fc4667c4323d4e09527dba38fbba94236a5ac07246606dc8cd0a403e0036e0964ce6d408a9d1028d5893627c30eefbca2f519828bb6554fa6e6682e2631c",
    "signer": "0x1355E4a176e5412E1DeC3aFB63ff581A223C882e",
    "userId": "945558612"
  }
}