{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0ebe0f4e905150e10f7d58e23c4639ae10b6c642c6f50699ada911e9415f0228",
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    "signer": "0x4c5AC7e7680c83116F534d4e30E2061A8D8363AB",
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}