{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x9a50fe96b3103925e934c13b2efa98f9294223863c498c1245e1451fb5c3f481",
    "signature": "0x09f7933af0fd1d7203b3de5275cf99f3edb4fc6e64dba4b9745c1773a8cd9b3b47afab2e5b83fbe14f5900110de2f3685ece96bab4e97c8e995fda9c7e2da34e1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}