{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "547969682",
    "entityType": "User",
    "nonce": "0x3daccb9229d2526034b868c9133191fd4305b21e49501861fe2f088ffe47052b",
    "signature": "0x9e26b5b0edc6e35bccfbe2a3727a1d8ec0f79a0a389a2aedf6b4b598be36517d35f7183c9a302dccc60b271dbac83b1aaa6a97bf4d768a59aa09198e72b3421d1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}