{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3641b0c40e3680da902d6f2c778e09af38047105622bd07f5d7ebc7cf130ec6c",
    "signature": "0x86212dd8cc8cfa07d3fc70adfc60838c4034ea85359454062e8e4a8181d4c17c02bf9a002ba833c3d731d90c14d873b4f5a0b9db60c7de643b3b9f679cdc0fa21b",
    "signer": "0x2E13a23B80c933b6624801750ADD8Ec151eDaE05",
    "userId": "377244720"
  }
}