{
  "manageEntity": {
    "action": "Save",
    "entityId": "1171242364",
    "entityType": "Track",
    "nonce": "0xd155abfc51aae044c5d94c14fe88d707de805a8768979a1e349999e2a77980a0",
    "signature": "0xd0d3ae64a5a53ca22530cd970a2b92aa6975d6b8f1c2c29a8b965a6313d780921b7b6b59af4282f52f16fe4116d51ea9f242d0e0ea413ad8186be0c3282f66321b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}