{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "981716494",
    "entityType": "User",
    "nonce": "0x249733bf241411af442b27379f889f784485b44ac88756c51d344489232053c3",
    "signature": "0x6e23eb09d4eb2f2fccd2f81ce399a00afc6251c9fc38bcd713868b6e1f102df340e2a3e8ba62449d9e545293607be8e9326ac963e004f16e73710d0a33c145551b",
    "signer": "0xF300c20BDBB459E009c4E55c08CFd33E12f8B0Cb",
    "userId": "782218508"
  }
}