{
  "manageEntity": {
    "action": "Save",
    "entityId": "824941761",
    "entityType": "Track",
    "nonce": "0x017fe940219a9ce6a61fa5c767f02738a4dc961c67efa5e69c4642884d8b979a",
    "signature": "0xf64c76d248fa1dcd0b246f9516e1ee2bc273f1c8d022c583edf68c3bec77831e4df6366af1b7a2a65ca187db0276950e27d4418508d153ac546ff9bf9fc2ff6b1c",
    "signer": "0x3B1596C5eeCE626eCaf33b6A05ed3055E5f10049",
    "userId": "119255"
  }
}