{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "270531",
    "entityType": "User",
    "nonce": "0xb7f21517f7f3f74e2988b2724fc3014dfe3a1373e02cac8c7edb81e732259ebd",
    "signature": "0xb9a88e64af1ff8b73298507ef673d0d2f1e3a1d4d34a25a0a6d062fd4d997b370dfd8006c8642e168ad388dc0db9377f0bec68ad00592602b559916c9121379e1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}