{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1308534",
    "entityType": "User",
    "nonce": "0x217e4afa16bfa7ce9384322da285d21d59f32a76d0d2cbc03d61c49428391a46",
    "signature": "0x9124ef4298f3d8b16a3afd1f48b5190c522ec01c516b1f750996cec6c8203c3d6d09b6ff4f00cd0d3633e4e66d97abcdbd0f9f6d9b8ac908e36978c420365b0c1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}