{
  "manageEntity": {
    "action": "Save",
    "entityId": "202943805",
    "entityType": "Track",
    "nonce": "0x6786415ff3087ee82b625545d849a8c97f36c332dc2a64b358bcc723ba0e5951",
    "signature": "0xad4ae0a9fa7420f9989cce804c613275090e2b1153d6b2fc353d76787f529d257d314ed70a7b87f25b0f9e556b75ca5c6a74f9920a7f252e870aa35b5ec2c1f91c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}