{
  "manageEntity": {
    "action": "Save",
    "entityId": "2034910679",
    "entityType": "Track",
    "nonce": "0xbb35ef6667ab404b66b80d7fbf7e56a9cfa2e7aa5802e8551f2171af8f5f1815",
    "signature": "0xcd2809d0e170110d5ea085dce89e06d528092fa625c35ca51515fd773ec8a0f92f13460cab1b998984921738dd8b7e82d52c40520138bcfe02c219524dd389de1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}