{
  "manageEntity": {
    "action": "Save",
    "entityId": "562080795",
    "entityType": "Track",
    "nonce": "0x7a76edf6797d6ea7e81af48954eb7a6b94385a7aab1963b9eaf4beb3c69d8c49",
    "signature": "0x4309f9ed9effb12ff176a0a962e3d0447469ab05fc514cc8332df55972638c13590663113e77e843b814efd3ed9ea484c229bba55c20e506d66b54663cfa0a021c",
    "signer": "0x53d8e61f7BdCd69E26B5AAe8F197464091224DB4",
    "userId": "99786"
  }
}