{
  "manageEntity": {
    "action": "Save",
    "entityId": "1924482671",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xcb1015524066135a820d02f3cc55d3bfba611d8cde3a7501bb1bdc4593669020",
    "signature": "0xb4a815d7e25eeebadd0b823d4ef8e0690289e8a0a20d04d6c232b38f7e41b62d20a354d7e8332c9bc0427c8d22374a22a8bbb7232fbb5a07989cee32a77988541b",
    "signer": "0x019ff76C6e9072A7b7ee22fC684b4B989b8ea3b5",
    "userId": "775276681"
  }
}