{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "444242968",
    "entityType": "User",
    "nonce": "0x4049e1075e0596ebf2b43c1f5f64ca7bb998c517348c7b0385a0acbe437bed5f",
    "signature": "0xe62bca1992f78b92857178017d9eeeca3db2b806238381f3c9e76f37a7ffc4695a5e83feb6864aa4f697edeb344bf5b1414bdb84fa1dec581d51d61db1095e2a1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}