{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "380579",
    "entityType": "User",
    "nonce": "0x5b90a96ccee043c436d933aa4989615dcf79b14e22b9e458a72717c6b9009779",
    "signature": "0xf36f9d6384752f8fcc80ac13688ad958e15aece2b0ecd0d4b387076e269a56a96fc0b591db774a2579ad27593f4b0c5b6199fa97af93487082041bda934ac8931b",
    "signer": "0x4f4C18220D065b5195F09E23993B70Faa751F0C0",
    "userId": "583021207"
  }
}