{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54889",
    "entityType": "User",
    "nonce": "0x61a534c4f28f47c44253c01924364040f952ac0870a4e89fd44de6f69b9f4bf2",
    "signature": "0x10251039d2c9689f05ea0a91159025ff8d923c2e49cf78e559a5d411758fa933689584a2f77ea61912e678d952e2da7f1ff8a09d27bc1a6f791137a8d6d1dab71c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}