{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28725",
    "entityType": "User",
    "nonce": "0x21b6bf5776c4b1b028e71b55335eb6a107432f09214486194e1fee618aa2aa74",
    "signature": "0x9f7cd5484e8ec1badef16670ec4af9d25a336895ad514b54ec826360395ea9ad6573c26b4aea316d2fbe1dc61b967dc7971709541f2623391556542ffebe58791c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}