{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x178f14a620313bdd49086e8f6967321393d53d2b0872117977c4c23e064eba7a",
    "signature": "0xb8d1173067d8af57ee840eec0147ee7889caee45f57c880cb58a16565f16b90a29c6e0e82922564247bc246f1a0549f38b129c5da0dc65a6d1d5ee4e5725be101c",
    "signer": "0xb15d7053c985Edf1d74fFc9893ab67Fdc2B33090",
    "userId": "211545300"
  }
}