{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "256050",
    "entityType": "User",
    "nonce": "0x9c3e8570b332f292e8311c66185227e43fc46958f452585d28f7cf96330b3474",
    "signature": "0x7ddc6fc563c2e6bf58bf127a22773d53117e925a43ac191aaf581dbcd9601c1e6f42381e80735fe1869821a6e3c3447103450f7b3adececf2616a555a2c0271b1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}