{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55640",
    "entityType": "User",
    "nonce": "0xc09b230ab2e3c66c8c1f690510865d5a9310e9944dc95dd06dc0b6bdd4f8c740",
    "signature": "0x71b9d8aa64403bff6e9b60d15f920192faf466d9418990b5c473c56bea60f3de1c56c50594a6473cec36b66a266da49f987a1754a24a85cf2ee8c5bb1612b32b1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}