{
  "manageEntity": {
    "action": "Save",
    "entityId": "1514227625",
    "entityType": "Track",
    "nonce": "0xe0403d423eb2284e999d02c9141a414054114ec33e1415e63a68ae772ce9b515",
    "signature": "0x2bf4f8567538fd3a8f91cf4f100f61c39d838cb4cc575bea621081e4d552bda56c4729b4b1eac08f187aba16b73c784479e3d0cf1b9620d921fa9813247e7bcf1c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}