{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "672274420",
    "entityType": "User",
    "nonce": "0xf3190607657000d335a59ce7b5514481298f0249447e88b7ef1ca3aee94ebeda",
    "signature": "0x429b02ef59f45e77e1bcf82967ee9f64fd6de3f64314aa1a112361214577b196410fccbd1a0f76f559181ff890ed52e5190337855705a9e138d6f34290e61b6d1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}