{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137494",
    "entityType": "User",
    "nonce": "0x30517d9da01ec458bc58273253d3abb4d6fb447e5dc28d74a4e55df42b239f94",
    "signature": "0xfc4cb9f9249c505ae68479fdafa6805e1ff0c3e736581d12717dfde58d264c082450c1e23b625c1e5614a9861b90a6dfbecfb84a25c5b93984bbb5ed1fcb7c991b",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}