{
  "manageEntity": {
    "action": "Save",
    "entityId": "701651",
    "entityType": "Track",
    "nonce": "0x60d552ae66e580f9b0fa187440ceb0d330ec4edef06f0065c9d3b20da0cc7dac",
    "signature": "0x29c6e5c8c197bce6840c4bbd5906c64f70d7e67f3a9ae1701912621abbedf3ad7042f6efdcc06abd4848fbefdc8926cd8f5dcf10c7f1b231b664e9b093318b0d1c",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}