{
  "manageEntity": {
    "action": "Save",
    "entityId": "169308",
    "entityType": "Track",
    "nonce": "0xce67f4583c5d90a03fc47ed7fef03da38d02cce7b9e7dbc3a79893e885e26b95",
    "signature": "0x7cadec7be5a6807f9193b0c3526018c9ccfa4b1eb7cfb5c85631265bacdbf56d6a6794cca9f1b319d234e9a84c91aff0600d2d77257c6e4f3f604c576185f64e1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}