{
  "manageEntity": {
    "action": "Update",
    "entityId": "561576876",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2b794cc688f0ec86c3dd7948299ae7553b94e2b502dc0470d3ce27926e5e614a",
    "signature": "0x8bb2648ad8de98157b7a6026d4c9b060ae09f3a70c1208a2f24a0fc66aff7eca3f46eb8ab7a2a01b4e50f1f5cfd1e106ea9f8319922039690fdd8fee9ab0bd181c",
    "signer": "0x3cD819677715E5bEcDcEF763756294f39C3C044E",
    "userId": "561576876"
  }
}