{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "71828",
    "entityType": "User",
    "nonce": "0x28a90ed87aed54b5932455ab9fbb898260ff2fab6fad32d3cc14e71aa4c8fae5",
    "signature": "0x2604060b89390216e276154fba51bb54bd68a9e3787a4a52d5142b6c94bad7681eff85c4415c199bf0bc85ab39bf9dc80bcbdf288f5e016c319474543ee567321c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}