{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0x4619b7db146012e86d7601eba9decbf12c123c1615c2438707d7df50b844c32b",
    "signature": "0x159fa255e393be41b2fba8f7de10e80b4c80d651c3dac315f419a408e18ccd2f0695b23d19592617ca8816d643e31e77222639b4fc4ed36f97d33053dd13b1af1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}