{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "333639",
    "entityType": "User",
    "nonce": "0xa4cb94443d6d4c7ec3ba772bd5b8e2216f43197c9636a8bf80ce82c2f6444579",
    "signature": "0xc13bdd5d2ac8111a4d9c36f5fe463a17bcb485449499c63d6b107601574f48fa659337388292cb98c7d49096b643272d1b6c25dd0c6ca8d4050d6f1e36ef765c1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}