{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137362",
    "entityType": "User",
    "nonce": "0x4b6d3a2e267415cc51bb920696637e52f94dac191e24210a53ac76a9efe5ebea",
    "signature": "0x197cc3b4bb2bcce5cd4c468947926c1a1c1d12e27c7b4b6294c5a2a4a34c2f852ece4a2ea71943aed51a1f7dd28899d36d4dc8b06a5d6c346d9fe711677c8a841b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}