{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb006abac5883dcb188a9ea9e9d0f70bd132127a5eea2039e1327992ddcbe0144",
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    "signer": "0x60495664C60cF8427e991465f31ABe2F9dC345A5",
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}