{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7be64a489ba6d1fc99e6a0c1991b120ea120b0bb397780acafe7c07fb55a67e4",
    "signature": "0xf99ac68cb112c0d036af3b30abf06240cf7e94ceab02eaf1e0025661b83abcf350e5912c764bd6efd36dc4bfa83c33f28e84dfa6a65cb33f5152aea0b87f6dae1c",
    "signer": "0xfd23694B370A14cF604001a6130dECcB83245cBf",
    "userId": "607405162"
  }
}