{
  "manageEntity": {
    "action": "Save",
    "entityId": "1072366",
    "entityType": "Track",
    "nonce": "0x2c2f4bb4a4ee3659c899939a9f74d685b755875dbce31957d75f28837120dce2",
    "signature": "0xc6b8dcab0e903ad97ded721d7219533b7b88b84fa83409e05534c750c9a0d4177fe87c3cd90da2eb02d0f40ed09cec3ebef951afff857546a674ea29d669dcb31b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}