{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "519637214",
    "entityType": "User",
    "nonce": "0x5df46e3b260ad38d137ee670813cb958b3e7b1a2fb2e14fb9365d1735268da0d",
    "signature": "0xdbd8e03f86c9211662f756eb4e8cd1bbeb2e84806ff0dd266e86940ebed9294146d5de6cd7cd22b67af9ac84d88385261209a9ab70116664aa27e6bf33eae6151c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}