{
  "manageEntity": {
    "action": "Save",
    "entityId": "1824582861",
    "entityType": "Track",
    "nonce": "0xf0679d36b55ccfe2e300d8b7f68db57d0e66d726ebffc1dd99b041408283c0f9",
    "signature": "0x7c5ad88d272230f08704fbeecb1605f030165056b16a920afb5cb852d45536125d289233e848c364dbe05a65703457b9844bc28994ba45b8da7c61c4a51e7a171c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}