{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x379f56ea8e327cb1f11cd716c1a91487c64bc69269e1354ddc12db360f7ca27e",
    "signature": "0xc2414a2de0b34cd53f5edf2d7826a17bccc2158fdfc31e67ec9a44dd254f012d55bbc3a6e5417058031434b3dc0d2e69c26d8f36bd398c3c60a6dd4fc5c489cf1b",
    "signer": "0x8034D591D4CA0231Ce46B64D37bdf415E4BEd4c4",
    "userId": "47471151"
  }
}