{
  "manageEntity": {
    "action": "Save",
    "entityId": "1517045345",
    "entityType": "Track",
    "nonce": "0x36acce2c85f47e11fe38dcbc0c2a2fe777ddc2d5cda6279291d1198217f3a6fe",
    "signature": "0x34d11862289d1d82463561928c12569196e9872baab608f85b37697ffbc6e33769197b73a1a1e00948c6962d734195b272ede6c60c0ef714e111a8b6cde6e2ba1c",
    "signer": "0x92d3aEA782A42D4B044a13a4727af9Aca3a0211F",
    "userId": "12615893"
  }
}