{
  "manageEntity": {
    "action": "Save",
    "entityId": "1162581723",
    "entityType": "Track",
    "nonce": "0x2d932f3951a094560e323edca4821bb465b709ab1a42dc0ef3336c0a84e4deae",
    "signature": "0x7791524a05d0c893996bff238c39cbb28deee9f0df2dca5c6084bcd77d7ac1a25d31c8b8463038b3a5612d14e4861247b80d7e5ee6c652d837f75cadccd808d81b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}