{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x825cc8f5ad831ae5ef32c87daba2bf349b93abdc4a39be2157c059ec860e5507",
    "signature": "0x50af76eeda5861515c61719f51c91f5f22ce9ba531190784f3c427ab2bf22deb3a8360be92e36701310e72287079ceee9dd68549c665660863e5d16f1bd9c31c1c",
    "signer": "0xdD03ED106abBEF4982159500e32B8602B985a69B",
    "userId": "444965341"
  }
}