{
  "manageEntity": {
    "action": "Update",
    "entityId": "21968114",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfe88715f82d2a4d25c97ceaa03241921187bdfdd712f620c64e7d98e76b9d2b5",
    "signature": "0x1f5f5a7a3c5a77b90ee322a464e65944b9e51fb6eb18bfe15998ad59967a0a98460654498d256d990a54fe141bad861b55313ec67170cb431d12139817de3ef41b",
    "signer": "0x558915E880FAaf3Ad4C7Ea0dcE061B87C7bC56DE",
    "userId": "21968114"
  }
}