{
  "manageEntity": {
    "action": "Save",
    "entityId": "543235",
    "entityType": "Track",
    "nonce": "0xa13565bacb971a0d9ef6d68d802664e2662f6544196d292f657b7c060db7d597",
    "signature": "0x441503b21e854e7f9f728f68b610e33b2bed6cbfaa0ceab010b873f55a2ffab233343981d8d00f008d0701b1582934c2f013ae7a06b117d7dd328debb985f87e1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}