{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x577957c68e361b37b0669e1f598af5d542ff6fa45381051d5f0e85954c166769",
    "signature": "0x4f872a997b2347b19c69b81dd2a30d1e7214d59b3ee16ed8c736edb27a62c0ce6209f5139722fd89b21c78eb1f3a819a7e5bb43f3c32c2c411fc9363428986361b",
    "signer": "0xbF01d3816a6F4764Da6dF0CeFC8C48EEFdABB333",
    "userId": "419795889"
  }
}