{
  "manageEntity": {
    "action": "Save",
    "entityId": "701102627",
    "entityType": "Track",
    "nonce": "0xa1f79ae3d367ac8eaf40193f168116b0e55b80a32f99e5ad42030c8ae14892b8",
    "signature": "0x4b812a9545fbba6c4d947bb1dad2ed459e2167518e56fc304a3605bae41992a533b4dbf4f5f9335af48731e3e5030949930a5537b1085d86146c839a5551a3231c",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}