{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301606",
    "entityType": "User",
    "nonce": "0x0b7e68dee0e84fd6e7799f945f86cf5759b753eed1e263f0f60161d55afa94dd",
    "signature": "0x75f1aa6277197428de00a91e92d63bb515c7742de17cdcc82e2618793754f0a90bbb16efcfcec1ab5708a2b769da4191b7e31a88697ddc3706f5b1f06cd7fe531c",
    "signer": "0xd12A323399559A3773F865c8F21031bc39c29135",
    "userId": "219968466"
  }
}