{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "652998855",
    "entityType": "User",
    "nonce": "0x0f8215565e569bd783398ca1d6d04e056c2d8fb2b234c1ede6e048a7b45c8bfd",
    "signature": "0x2cf332b8460a575d2e2ff119938ce9fd6d429c1b9e148cbd73e0c016cf83d5ba010b87054699e5a97fc5e622a0c59f70e53be7dcfc8b6b2524b4d4ae70d070031b",
    "signer": "0xD0f51E232A92DDc965FB1FE51d04200D15d10fc1",
    "userId": "536634479"
  }
}