{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75612",
    "entityType": "User",
    "nonce": "0x1beb6143d1b8437e802339cab588cfbde08a820b2a9bee567701be67c929e95c",
    "signature": "0x44fdbae909a4de40e3857e73aa18b6ad9433b2c501e25b62e87157440aca29da4ef9bccea01b97e4bc5d06e5a4e8d7db9cd970a0aca50a58dd5c1cdabfae59a91b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}