{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x96bf82538ad7b42e3fb666350ef49e10eddb2d440716e3fa4311b67b1bc38a95",
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    "signer": "0xbD56696c01202DC6844dcefb2Ef5a0706C91a782",
    "userId": "778711841"
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}