{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54775",
    "entityType": "User",
    "nonce": "0xfcb84da4e2e2575226b879a45d81bca94ca163dcb74744f65c28ddc0ac95c219",
    "signature": "0x91c90888f18026d9d2160370a367eb72121587fd6b73bddee448984a92f44b2c2a4c6adaebbe4150baf71ce2b896fe36ae7671b87f745b661059828bac15efb21b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}