{
  "manageEntity": {
    "action": "Save",
    "entityId": "101485",
    "entityType": "Track",
    "nonce": "0x628fef07737b40ada95a61424ae07e4bdbd7b15393e228c7d12eb35065aad218",
    "signature": "0x097be920dd78bbafb13083ca1b2dfa80dd6094a34b4df92d961b83b794e61d1365f03da1eb59b41ae4ac5b3a66122526ebe37b0dfebdc19b5c864fa26c0a87721c",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}