{
  "manageEntity": {
    "action": "Save",
    "entityId": "176684175",
    "entityType": "Track",
    "nonce": "0xe5303e30c0892ab9b41b16e0a388e3226cd7103d7d1ff46ff3aafa0ae83d101a",
    "signature": "0xb585e6ca9d51c30e958001bdc0a13264b8e36349bdd43e427242b35041306d7575a7f6040b08127554399efbd20b1fb3fe54f7314715391245a2481230a101cf1c",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}