{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x403c28440e84a2e4c03a72be6f6c312e1c79e1d7ab34699d1b785a2202173339",
    "signature": "0x0145bde4099b5ccc6e6a2e51d24f0d335e7adaf5faac99d069ee5a1da029e5094648c84e60eb238fe175b80ec3f318ed1b507c209ec01d6419e57f69bdd59c6e1c",
    "signer": "0x81c8AA76c29E445c135597092DCCEC0873390C95",
    "userId": "672982126"
  }
}