{
  "manageEntity": {
    "action": "Save",
    "entityId": "126532",
    "entityType": "Track",
    "nonce": "0x1967cb972760d27ee5ed3ed4a953e5721ab9e50296a60680ca580183e892af39",
    "signature": "0x387f679e396eabf159e4cd60138c117fb9ac57aa7b445284d979ae4bb97756440f833456acccf0c9455f19ae06f88dd63cc39b2479272fee489813f55b9eabfb1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}