{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x74a198fa7fb079ed997a178d63067d4fc43a3bbdc4faf269ea5095de65e95384",
    "signature": "0x2d7194cafabd85ebe210612bd3e63d87519e4b8618b89c09d37c91d3efe2ef2b00f720d229fcf84ba8e03a4e84d6949178bc0d080c381bf8b11d7147c0e0f73d1c",
    "signer": "0x946351Ff31EF07a3634a1Dc387B6d6BcB908B70E",
    "userId": "189550218"
  }
}