{
  "manageEntity": {
    "action": "Save",
    "entityId": "106586070",
    "entityType": "Track",
    "nonce": "0xace77c27f7d3a0f171a70621f9d0ee7a4fbeaea732fcb3535a9379663624061c",
    "signature": "0x1f0f0c561bfc7feeb53506b67f0021174ebb3004d6019e0c2adf5763b08697945ff561be507c7ee880d05b9c621a6a39d01a2daa1991c580a830b87845b45f5c1c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}