{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2703",
    "entityType": "User",
    "nonce": "0x28768c2edab5c2a919e9f6318abbd1e49ab72c33d1f2bbca4898efa1037bd0b1",
    "signature": "0xc89b4981cc47cbe391c394497a1918db81a69bd95f7410f1ffc00ada66a282504999eeb0b0b139e3a8e65dba67928af1d28fb28c394fb9bd683db5ccc04ca2fb1b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}