{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "873014119",
    "entityType": "User",
    "nonce": "0x9582d748ac3f00cc0ad0dfd1189ddffd03d076fd314751ad21e8592872a7c04a",
    "signature": "0x0f08203c559a3940c523c1ea546c8ec4a24bc9dd1cc055be99c3f60c920a58573d91729f720289dda6b677671475ecca2ce542f4d6c2823121cf9a81c125e9531b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}