{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "712688986",
    "entityType": "User",
    "nonce": "0x87ac930202b4589b931df7f999975dba48b4fdb87e38c9beed93c8ae21c959d9",
    "signature": "0xaf85b613146cda27c9e26dde211feaf2dc2adc98954bb7ce1f998da726c325f874d0d532a5449780b6e9d73389409f73c58d87ef962a0f75e7c255c6a87b635a1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}