{
  "manageEntity": {
    "action": "Save",
    "entityId": "55623",
    "entityType": "Track",
    "nonce": "0xccc8fe9d167229b474f0c28d520cad99aaae837a4404334596a73cd88d33d619",
    "signature": "0x9bc1035092c53623bdf541ddbf2d9f5eb58811069edd63ed15af10cc027978840f7b8ccd1afb48dd4fc6e8a9bc150c2e53fe1621a7f60caa2f8b077841f33f991b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}