{
  "manageEntity": {
    "action": "Save",
    "entityId": "912928186",
    "entityType": "Track",
    "nonce": "0x91672eae8b3de1c9698f379c86f2b6c9399bd9190c551ad5707cbe1592fd6150",
    "signature": "0x3039c8655d84682b1c90948dc0a7e213ec1f098f2d7dbb412f03e7c552c4c7aa234542c14b8afd05cf24080fd61daa279024f932fd8326299c83f0c5ffa72f751b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}