{
  "manageEntity": {
    "action": "Save",
    "entityId": "927627255",
    "entityType": "Track",
    "nonce": "0xe0fe6bbe35b6f34c9e688d7eb6b5e4dd55300078164b4d5fdf7fbffea81fabaa",
    "signature": "0x409dc929b607f27ad008582b9337d6f73ebdc0984ff9680c0a2f49e11e11862e71fa12c8dadc0cacf489249c6bca08f807dd48c4fbb9c075ad519827d9f6eadc1c",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}