{
  "manageEntity": {
    "action": "Save",
    "entityId": "36723",
    "entityType": "Track",
    "nonce": "0x32eba3101e38115f284db9d46d8fc5c43024a22c1b33666ae7e572e99dd3a1f1",
    "signature": "0x3478f91b5a27bd7e066f993acdb175c032a1d096c80b2f417aeea055daa06cf0218e3f3cc26ce8b5d98e108c53b2ae45dfe4ec280365a0f7e1db0671b1afa7f01b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}