{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa9375b67f45720dacc0df35269d2460fb4a80bdeac02ca67aac14064f6929574",
    "signature": "0x1a33a7489918767875503ec2f3bae367115af0cd5ce605a7c66689f8d46dc3c23d963977d60b0c68cbfe156dfafd93f28f14f0e6c045aa5a05b9795faf57bcd31b",
    "signer": "0xCa890ba09b096164ab040247D3eb511DD5cC5f51",
    "userId": "489821062"
  }
}