{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77481",
    "entityType": "User",
    "nonce": "0x9896ecba09e3096a168a632bc1a6ac5c9c8638beb4b1f8bf3d4048ad85302885",
    "signature": "0x7f16dd8a8f26a3384ae1a8af922b94bbd24f0db5e4ff2806a9e4f9687bccca970fe774bb34b512692f6b869ddf9f252a4348b2ee2ec240d13ecaa1df1542cc7a1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}