{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "352613",
    "entityType": "User",
    "nonce": "0x64ab7060fe07d2e5857eccf0ed20996689f1d9c5c9e854be3f06a93d2aad3de0",
    "signature": "0xdfe963b57d95c39048b7fe39e61aeba14553173b56eddf26cd15c63ffe8cf6d40965f0702440f3c1874b5d9fa303710cd3cd729a5ddbc7f920195397747e34a81b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}