{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "393760",
    "entityType": "User",
    "nonce": "0x315e4a134ec53df1fbc0d78fd4f321e5a1616c6d3b5f16cd58659262f27cd5a8",
    "signature": "0x1778d95b11fb270160f4c55054f276a1aec05e98ff81c5178495473e07d9b2f702dcf9fa62c723d991926ac8cf3e25de9c639b162e4216710fd4d09e5fbac8511c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}