{
  "manageEntity": {
    "action": "Save",
    "entityId": "920934256",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9b6287566acb9db8c8099158d84adddb91b704b86b325f651822f9f6e75bdb41",
    "signature": "0xbd0db952e1a94accc80b1934eecd089eb934847278dd29d3b064db50884a1da94409c0d530f6395fddae396fef8901828c012d537d877b004767a4f2e4fc2f781b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}