{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "58219",
    "entityType": "User",
    "nonce": "0x3b6ed653c131c395c474dc999c0afa1fec6572ceef675f0b1ac5339d7bfbad6f",
    "signature": "0x3be44c4d3796adbcd8a5d8bc3e0d51afd2f5cc3c1a815ecbbb53c802b350180d0c0a3883a0c50d1e01f6ba65a3bddfbf4241cd50afbc046d6a37b2fa239358ac1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}