{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x40ce76ecc7e42aff84c17ed5b2a0db7603d9826dcfce96fd2d4208db8e05ba84",
    "signature": "0x0a3bff8bff7017b392b2b0c84eb4792bf81149fe4965bafb783b45bb40d0f54739506d58c69aad445990b0c2819328a4b8f33efb3c9776a12f235e6efd8ad7cb1c",
    "signer": "0x39cA0Bb53A1ab273Fe4E61EA8d7098c25F8AA132",
    "userId": "877641555"
  }
}