{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2984c085a51c986b576cbde85db56db439df2ca800e2bbe55d3639846f1bb19f",
    "signature": "0xdd924da2e527a15d76c769e6c49e57ed7d3e2cb76415b60a951c6e89520abf9771403eff09e508f8371441b23d2bc75466e70b62c0e4cfc43043d9c5e13eb86a1b",
    "signer": "0x19f45BcD7C0300306b47969a99Dc4bc70Fa19fa9",
    "userId": "20289770"
  }
}