{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "105562689",
    "entityType": "User",
    "nonce": "0x77efc67a0b5a880e861255ac017b4f23a52d1ac3c09276276dc104eb5ad381e9",
    "signature": "0xdc0c5e9084474221ffe2ec21c9b4be1aa1b7cacc3c3bde5c6d2b3db5e76f53d17640b1f338502d3beeb838bd2e06d64cc9cc8fd5653f7b87912a137aa5b904ee1c",
    "signer": "0x721f076D6fdC57634d612324093cA69B47866867",
    "userId": "303348966"
  }
}