{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "488430169",
    "entityType": "User",
    "nonce": "0xc8de3614f9f18b0d553915be61aa6312cc4d82135a6c345f81c3d034e0f1c732",
    "signature": "0x8c458ba8617ae70626d9e174a94333516dfac0706e68ea297d3dda8ae045f7a45935346654bc571c2ed55a3ec28bd36d4348678cf5d70f2ce84a549c11e1c3771c",
    "signer": "0x16D3bf5a80bAfFB2f1550d49b1203D4CA532DA1C",
    "userId": "1994482"
  }
}