{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "388772718",
    "entityType": "User",
    "nonce": "0x882b015a16cb958f8cad0fbc559c3a9dbe434d9b3b5a5f6ed08ad275ef9ba08c",
    "signature": "0x364b0bbae5286b93dee140add7a21ed9c18c22723a20078f5310650f28a108750ec7bc741a6e9c9b9fc07e4a98bcc96d59101f5b5bdf604e7e9b3fa87561f4921c",
    "signer": "0x9FF2A7F5Fab732dA57359bb3eD63a95511bD1329",
    "userId": "67863854"
  }
}