{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "831117417",
    "entityType": "User",
    "nonce": "0x88aad4618e1ca738978aefda616e1eacc8678f2e920653795f4b68ec6201b225",
    "signature": "0x1608758cdcc2b6a2d590f30916014158fe8f550109e3e201b24cbcdb56792a0e726b70199460788a66c311b9dd643af76f850f71f2bafab900e7f1cdd86e4d951b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}