{
  "manageEntity": {
    "action": "Save",
    "entityId": "1060217019",
    "entityType": "Track",
    "nonce": "0xe027b3b6afc56f4f091f719b111848fe5dac979f691217100de865f831be5671",
    "signature": "0x75c44d7ba74ec1a7b8a705e598c3c91193298bbcf379dd2a4cdd2480d84a619e05bbb86255e69806390855c1f0cf095dff61ee91f5b79b7b6e554920b7eea7671c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}