{
  "manageEntity": {
    "action": "Save",
    "entityId": "1060733",
    "entityType": "Track",
    "nonce": "0x2cb6697fe6d64bdea15e32aeb732f44e5432c6325b992cc0af03b1aa0569d308",
    "signature": "0x742ddde400fc5b9957d749d5d2cf16be74d0ed1feb624f3018b7a13aa6c62f970db0156a3d0595a751d5cd467f769ec9bd3f967fca22d2c15c6c236a4bb37b341c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}