{
  "manageEntity": {
    "action": "Save",
    "entityId": "76879165",
    "entityType": "Track",
    "nonce": "0x36588fe115fdc189a7af5ebd9672554ce097bfcab4c0aaaa1fddfd544a0203ce",
    "signature": "0x3d1fa10a8ced28586aefbb99be54c8cab89e06a30757eafa4587ea23ddc9303d59fba8d68238076c87d9e04879546e1e507e4be08632d2100eba535ba0c61cb21c",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}