{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398389706",
    "entityType": "User",
    "nonce": "0x586f27b816cb985c238bf813aac634387afee2be9808bb2709fe40680e290901",
    "signature": "0xc9077ae1c4b867855283eaad08025cd0e26cba91be1111679392310306012d8812d79ca6b0a846aac9f4a5a758f4a022058de8e272d22f70e49496e228d334111c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}