{
  "manageEntity": {
    "action": "Save",
    "entityId": "126533",
    "entityType": "Track",
    "nonce": "0xc3dda8688b1d10d0dd289960fe5ef442299ea589692155f31b0e05ac00b7d897",
    "signature": "0x9174adcfc6f61190dfa32f5e426e7fd14f35976207cd60842eabf05c672543672d1537f7374e5fb4a4e07ce97754b19e079da82d82a8745f5f54e1e6b2e2f85b1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}