{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "270298",
    "entityType": "User",
    "nonce": "0x28c0f611336e1c27f65586ea50d1c87a8b0087d76acb01c2356384f9f3d5c163",
    "signature": "0x507be637ed8e308bff1674475295068b84376bf4c223e5a12505f54f1b0525fd0b937f167423bfa8259e34605c1559106511fe6c67b180fcf57eb7ff2fde726b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}