{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0x19bc6d30441a60ba2268b64c55deb5b2729d3c6f251e7152631a86e62500b7a4",
    "signature": "0xd23b34cb9bc271135b4611f4c3982cbbebcc27d3c068d53b2206321a9d783cec71a45ac1a6d61cdd23682bdd78a10dc0f5cbafcfda05c43334051daee68f8d2e1b",
    "signer": "0x85c38463b4Fb936eC315485c2360b60B2012Cbe1",
    "userId": "581465865"
  }
}