{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x8cee5ea7f9b570f46f074536181e9f70444bb62b6d9dc3775de86ce712685cd9",
    "signature": "0x12a2f782b5b0c1928e44e42356a0ec1ccfc411541ca03a0cdb6a6cde1125fbe05ef2c79a14b134e73b1e1f204998f2ff48009738c59115f6fa1c46d073cda4191c",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}