{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75700",
    "entityType": "User",
    "nonce": "0xb50c4300dfd3cfe19e06f8812eec823382b933d183a559842fca92b908725920",
    "signature": "0xb68c5e62f27f0eae8d00875d07c050b979d8696dc6245c1092ed489b62de86f125897cb937bca2a6356bc064464ebf96655153d8f28a02b55a4462f03a5728491b",
    "signer": "0x57Ad6E2E3fFc5ABe9b5FE7DC3bF7c07c8cCf9Ccf",
    "userId": "571702334"
  }
}