{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xcef2f1cb80db445c7c36f0fd2fcca6042b93669f3cfeb58e74b599e3fc481c99",
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    "signer": "0xA127c51d3Da0e5aC363E0E9bA40263f91F10B2A5",
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}