{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x15757a907ddee7e590ee7d8c26a30d201135b0060ad5e61a73e8eaef28517aa7",
    "signature": "0x3a95c09acbff6b2d374e0847421eb4f404592e18271876f2ff5f72c6d6209a9f07440faec28b047533dbd0811ffb0bb92dead143b96cd4f7d2d7e67a679c2e351c",
    "signer": "0x89e90d08149dD7F9f97DE25a1eeB3A79D669A53d",
    "userId": "226195490"
  }
}