{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "49515",
    "entityType": "User",
    "nonce": "0x412c21bfdee17f207ee9125d60f26df4a58bd9c481c26e094b130b568c4a6c21",
    "signature": "0x51d02c2000e941a48fdd34cfa6ee2dc7bdd5a831af96db641c9a47547c6a4c7f0116da38126d3b728177de2d83d933bd4ec1728c06f0deab1cbcd07b811370001b",
    "signer": "0x0C7E3dcDA8c6b4b66f9C89A3f95b52b70E44ea68",
    "userId": "783269552"
  }
}