{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xba0e5ad90e84cee2196ef40b24dccac9ea37945d48c0016fdf91682539889cb2",
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    "signer": "0xa8189812339C15eeA66c9f320283914536DE16a0",
    "userId": "27678437"
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}