{
  "manageEntity": {
    "action": "Update",
    "entityId": "48520426",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x190ec8ec58ee66672b445503532e3e99037cd689b3f725f3478774c1712ead27",
    "signature": "0xa406a42e288836a4cced2218484a7801a343f4d650d2ef2e9e61eb2a2d205fdd477835285dac3d2e85bdf616aa5a2d2a4c60bca01dfd55ee1b8e2e81464246d21c",
    "signer": "0x758412042706423A51F134197318Ae914d67193A",
    "userId": "48520426"
  }
}