{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x01d852ec8b62d3993e1d98e3c25da8c55fed08af4eb2f83fe9dc26cd0f15b8cc",
    "signature": "0x20968db7db032e77cf9827c589da0aac314e6c784bc5ab90185050e4451c2a681dc43dfc58c5467080c5dd3ffb8c270a2827a4b7a44851033fb3928bd1f2d5841c",
    "signer": "0x362fa0440C34a7b03644991F1Ae54C006944c2D0",
    "userId": "90641891"
  }
}