{
  "manageEntity": {
    "action": "Save",
    "entityId": "271831838",
    "entityType": "Track",
    "nonce": "0x024431550492801256e80065e2bb67137a484525a1df39435841bd09491a1ef6",
    "signature": "0x30f62d2539b81f68e5a668052545df1731acf2e7304aa26f1f3d4c0a2b8b70ad160b7b997f0e021da65210174c829123f7bcaef5ae59f0b40c0aea2fcabb787a1b",
    "signer": "0xBBBE9eFc177a4E708d317195Fa81aA6E8E2F7E92",
    "userId": "557135181"
  }
}