{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x794318bc9756fa92f9baf5016d871e0450e062a482e0d7dcae75b1bcf3f065da",
    "signature": "0x74d2f14616a50d158a78a601e0b99cbd578244d57af145c790a947aee4e1c7787239f7063223988540b81d54a50a4b582e50a39470568f4c37ada667d3a8832c1b",
    "signer": "0xb3251e338E9c1c14772d278EF24EEc029771BbE7",
    "userId": "119910748"
  }
}