{
"manageEntity": {
"action": "Save",
"entityId": "35639649",
"entityType": "Track",
"nonce": "0x44dd8347f83beda05dabd9be7ada8ad62e61bf1e509b92c0b1b4c49329d36e3f",
"signature": "0xcf1a0493a1494caedd22acb3e7666f1318fa9c64ea10829387cec07f07a83cdd231164ff01dfb15c4fd4b0680e28fed0cabbd973107639a65ff3bd6fc11aa9cc1c",
"signer": "0x2F7db4C1AE3922aD0f32CEdED1870278dd17b64b",
"userId": "467213409"
}
}