{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381084983",
    "entityType": "User",
    "nonce": "0x43b81d2103ff82dce3509f49cd5cacf80a056190c48bd4a7b203ea0aa55d7bad",
    "signature": "0x1a0d3973c200d94a127331605a330ba746d69a3dc4f350a2df5de21ed16a048721c4bf43dde2b0df2b951ac27e67ea3fc484b6371a579aaee60b1e07642cb02e1b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}