{
  "manageEntity": {
    "action": "Save",
    "entityId": "1822582990",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa8ed94961cda14414837b6e2be931aeeb8d17e142a9b85d24234e1e42805786f",
    "signature": "0x0e4435c97e4815aec0c2b840e31d8914faae2c91dfa889c2c6d08d872c6aaedb4a545d1028c0d03eebfe756390f08d4582dd26925eb56a7e6190e63b64f79d501b",
    "signer": "0x5D4848bCf5c4abA1a0Fdf2B61408c9e4288aDb0E",
    "userId": "305415280"
  }
}