{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7f7ae8293d44961bb093addc7adaeb78f174b10d8babd76670d3fdb144ab865a",
    "signature": "0xb9342e9c635846a929fe20d9187ab0b26bc469489c72efc98a9b4fa168b87c31440486d6c53907330c803c5119f5432d399b0fcc4b5de51fd8e0510470827ecd1b",
    "signer": "0x07d7a46761dB78DC1d68D03aCD251A2800940A5b",
    "userId": "199549318"
  }
}