{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xfd1a70b5c9b4b45272869016f8b42280a0b80af9b322b3aafa43eb19aa309f7e",
    "signature": "0x1dac3a8cd26dcc87bd7e54bca810e7f47c76f5e4c2b18efaab2474e80f18d20807f78a21a7da3d954edcbc3f34e9f5a983c8edca8310444c89ece61e63ff071f1c",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}