{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x301b66cd519a06a74ea0e2e0c246e6ff239757ab49afb1836d3203629dd83e0f",
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    "signer": "0xA14f5dF620E9B04F90af9b039d3c38167aA90b2A",
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}