{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "145238",
    "entityType": "User",
    "nonce": "0x319042596e2e5079b4ddb9316f5ecf060222206e719d64a9474c110b9fb5c402",
    "signature": "0x421c57479a1e8b265ad7033048bb1ba54fe69741bbea64db4935bbc200824db11327b0922470713132a9f046e582af0b318815dbd936825a722b40fda06d87ec1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}