{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121458",
    "entityType": "User",
    "nonce": "0xf569c6711f3e288d063c96134238b99cc16128e45aad69ae15df78e1594aec3e",
    "signature": "0x939c29817b24b81f308f5adb6a190aad4edd91924f72cde23780da24af136b3f3b8065e8650e661d45256bda43871be5b31914e40c58ea99a3bbdfca800b12a31b",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}