{
  "manageEntity": {
    "action": "Update",
    "entityId": "313852477",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4a427b96ebeeaeed7d2a8590fd4eb58c6f99ce656d362322761e0e368189f7b4",
    "signature": "0xd6695f039fcf391a6d1141b66660396e7efd9bc3b8e72d281f550c00f9886b6c7bab98204ed36198e16d7a3d0ed6e6d8ed7d99d3def90115d39dfd1dbd60df0d1b",
    "signer": "0x27D122951c1E664505873CFc671BD727764e8e9e",
    "userId": "313852477"
  }
}