{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xc95dfcb4628e04508a4baad263dbd2f1a53adb7d09ce91d5e18a95e2adf6011c",
    "signature": "0x132c81a1ce74cecb58adf2a618e2b5db119b02856d874964caf56e4068f8b53b69aab2045887a0e8ed05fd98bab475b71dde56c000e17c3c7f023756caab084f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}