{
  "manageEntity": {
    "action": "Save",
    "entityId": "1939043228",
    "entityType": "Track",
    "nonce": "0xafcbc58515c506f0245a4583dafb6b5d4b4ff2d9eb1dbcce19af9db49ea2d91e",
    "signature": "0xc822cca1fef8fb4b32f7c088b9be00b94c2134132b80c817ffd5cc489c8f56536d80182634d7edb516569e09c9201fd98d6e918c3e4f8d8d745567458dd2b3191c",
    "signer": "0x811B619477Ea800Cc8e7fDd08cEA323eC3E06411",
    "userId": "791433195"
  }
}