{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "140600",
    "entityType": "User",
    "nonce": "0xe38cdb770dd7d2bf41b463aedd0d2479a6c861a02a8dadc4503e2e3b4ab7a505",
    "signature": "0xa9e9d4d4fc13e7427f1f4e15ebdcef3afc30f92f6cbc258f2765599a32057b2d293c4fa69e52f46cc970c9af47dc042e2cba4583a0e2377ece7e06e7e67390571b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}