{
  "manageEntity": {
    "action": "Save",
    "entityId": "1151052068",
    "entityType": "Track",
    "nonce": "0x7f30c96132bab2c40840bd2580b2edd9a77e2989da99684c11851ec456d419cc",
    "signature": "0xc2d31ca32aa582d1057fda4d2940e212fb6c47b240532d463270e083bd2a76ec1b684e4cd333c1fc599b29ff87fa7117d1166c78a5fc1adc68357af4e2d5385f1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}