{
  "manageEntity": {
    "action": "Update",
    "entityId": "424758382",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6d3ff6751e9e8b0cd22f86ccd4e289d5f5a60257ac6e7ece4fb93363215ec6da",
    "signature": "0xc8781d2947f6c6592727b11a457435fada8d2db229e4d4c9effc1953207a67e214452bcc69fa0cedd2f7e8099a9cb06c40015c1e491872096ccaac1c219f1dd41b",
    "signer": "0x60e0bF0248f3cB38407eEee857d61eB6F9729811",
    "userId": "424758382"
  }
}