{
  "manageEntity": {
    "action": "Save",
    "entityId": "276972261",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x290e7b20fba1c56ebce3e551505970b546e030cb35427933ac74657b44c0822e",
    "signature": "0xbd90fa0cd48e786541778e9e30064f32bf1405fa120f7c06c1cd762404c0184818ac7ccdac9cd8e6e3ecee6f4a7e4d1ad21f605aed5659ac960197d0facf70911c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}