{
  "manageEntity": {
    "action": "Save",
    "entityId": "806977433",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x461e6405b98c576908507b35c0d6fc96ec370b669811c73f7178f54ec9ae0c1d",
    "signature": "0xa0c8499d9beb98864163f2abcd8ecbcac9dd044aa35e423001cbffbee6d2316e215ba9c74390bcc44573c9610267c47d8ae7a329bba3a5273cd6323fe6808ee41b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}