{
  "manageEntity": {
    "action": "Save",
    "entityId": "1965006494",
    "entityType": "Track",
    "nonce": "0x10ee7aec232d1264d77351fe6a7870f5b4c75c2363998f4ce0f860d00ddc1f47",
    "signature": "0xb50dc73df448d1e7b38ef2a7f82fc901e9f05e080e1e2180fdcb6ddc7b694a434c1242e3b70ca3bbff30e3a3f4b4c58fc84bec45947d5892ef0c952903c6da6e1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}