{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "364075379",
    "entityType": "User",
    "nonce": "0x538559dafa334a63e3e5303dad061e9e4a137a9b58c7a2473998398ed0fcafec",
    "signature": "0x56b143c9aa07a092c8485956e7e67d4c10c046e6ff6f827581b421d8620d18467be77c906f57ee67bc4308c4a42f710eab304c13dd9528ecfcdd9c559bb287c51b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}