{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1873428",
    "entityType": "User",
    "nonce": "0x052c99198c22e2912aaa03c869d278879e9ea4fcceab8e0f8c8f5d0e52dfaaf8",
    "signature": "0x14436993eacfa8bf105d390ad744067d36fd358f4a52f88c40e3577424a2c8c53a1460c3b7091d9b908d57d650a4bb24084525e73c38f135e460746d83edade21c",
    "signer": "0x433B6949BA291D415b88F2ae8168DC238f50e952",
    "userId": "452956272"
  }
}