{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6e60d8f4e0bd6e691a890f9fcc5c6ecd4202ab90a2e8b634321972e6a0b3910b",
    "signature": "0xe382957dc92f71a93321e9d6a190f708ee4378afe27ba94a5025afa6a7ba02a13bf8294be463d2a26d1309eb5172d3795f43eb41974031bb2647c0db839f3eaf1b",
    "signer": "0x11a7cC59F7CA0704caF3dD4f58e05F0365dCA6df",
    "userId": "735928630"
  }
}