{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381991",
    "entityType": "User",
    "nonce": "0x543fc8153e0fabee2178334606b51b8a0d572722c4e7c38f3dd4cdff95d8e683",
    "signature": "0x07b7cbd93528dad01f7782adc26330f27443ab3ba6c81c308a62578c1f3176686d2a1b7973218cf07a8fababda5ec209c2e79d1a2e928d796c8250a9177bb1451c",
    "signer": "0x67E321241D4e44e5aB5D1c365505f0F33044C7BE",
    "userId": "460631539"
  }
}