{
  "manageEntity": {
    "action": "Save",
    "entityId": "1332123175",
    "entityType": "Track",
    "nonce": "0x82284c45692983a3d970534da14b252cdcab57a79816144988664cb1674de651",
    "signature": "0x35dd9a773da531ad95aad32abfc0b43dcdb0d4116dc8a9b79d5f4a9bd8fb06814b88c03347149a4901f739e9165f0838168af44abaabda588a90dcdabdc6982d1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}