{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "752258468",
    "entityType": "User",
    "nonce": "0x72dfe856e7ca105c5371877b6010e7f5b45a6922e92d565039b44773190841b1",
    "signature": "0xe47212ded40dfdb21395429e8da9cf5694e30e1358524cd2f037ad2d18f923776367311c366895eb2d7f20fb08711f64f39bddde4e8888d23258ecca16e108461c",
    "signer": "0xDDCce44d487ED1f7297d836241df35AAB6D867b0",
    "userId": "22610281"
  }
}