{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdb7bafd28ad515e2edebc3ff1c75425d9e3ea507e37fe85e9ebc1373a7cf498d",
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    "signer": "0x77417B2F3c0aE9311e22d9d0b21326C945f9431a",
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}