{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4645",
    "entityType": "User",
    "nonce": "0xe9ac7d5cdccc9c5bfada6b51e623641a4b29be428728a66dba8b05ba5ae17c9c",
    "signature": "0x9843e8320643249a0745cc8cd2e6be946ef2d73d4b8c476b56e9113bfbc1187124484d4d77c05b64862967a3dcb7de8152afae37161581dfa91bf7a2384d6f381b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}