{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6ed918180e078b2d37fa2b8ced6956c2a15c1a2c4b0100575ebfc9d5e160333b",
    "signature": "0x5da54492e63b1bb3e674320a6f34f3ac6a5cf1538ea597ffc90a3ff7acc4042a5c55642d5e022a272826da6dc4268ecb33a8f9eeea2f391289de10fc5c279c061b",
    "signer": "0x2fff57D5628D87Ce98d02775C9cF63dB765aa6c5",
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  }
}