{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "939113546",
    "entityType": "User",
    "nonce": "0xb0ac90d53594b7f39edf4530eafc7bcca93ef1c9498e7d7eb92fcd7f64d31364",
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    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}