{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1780850",
    "entityType": "User",
    "nonce": "0x1acd2a6a0a1de06f4d929a1c8dd431ee386bb7abe8867fba4ba5db89f90ad715",
    "signature": "0x291d578e82bf72d4557f082c57e25275ac917dd01761b3aa33f24d8be9d8566542519536c31d95b081a88d7f6d19fe000cb5cbf38b02ea3a368889b30d25fb6d1b",
    "signer": "0x90d627796C9E2071AAd9F8C20f6dCE95587F6d13",
    "userId": "560619378"
  }
}