{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143430",
    "entityType": "User",
    "nonce": "0x62fa28ef6a45736a880fa874164ee354089d8957aa51787c887496382cf57d9c",
    "signature": "0x754444c40243f1a41c755a19678ade56bb161dafa5c455fc74a7dd72e25a3c193a8c31f2d565c27b4d471bf7927780ea07f1f2ab98d687fb7b98c47bc03430b31b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}