{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xbbf5943535c9e9a0f66c5d7a1ffb8bf35e84a35955c26e2c8a51af7ddd684319",
    "signature": "0x65d68e2150842b8f770afb37e72086e34170d62f856eb1da53333372e4e454ca5dbcd1c1313e05f113468f427fe5f365aa5a54088e5b40a31ec4d6af95ca19bd1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}