{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd77fde854f438b1b189943ff8c8f5f1f335f84c2b040eed8d03aa8fef4cf3217",
    "signature": "0xa9f1d82e5ae2473702ad077f2a6cf0033487fde9d343f34867ad483c78fb1d74621f7554d88f71e5e3a2df30f2e67dc8d275fc2ea465775e4ddfe9b85a8979561b",
    "signer": "0x5B015c5c293d7d025c903e2803A3bB7AAD0F39Fa",
    "userId": "41107270"
  }
}