{
  "manageEntity": {
    "action": "Save",
    "entityId": "991392",
    "entityType": "Track",
    "nonce": "0x0bc42ba400632bab713ea492da7fc56467cf801be164ae5619453fb0394164ad",
    "signature": "0x87b011f3c2d208b8af99423f26552c2526f61d72d2ce4d63bfba5ee6baeb36ae7168852bab8093aee318874b47d41b0792c865603066485a2e85ad9715bc24b91b",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}