{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xc91ba04fba645f059b3ceda59b583b0fffb49badee51eda91e00100e538dbeb4",
    "signature": "0x60344553516bf011d06c3a84dcefcc74495d1803bb41e9aa85451aab525b65e007238ef1c02e2674b916023a628d3f4b221603ebb5adf31f5a80d18f4bc7137a1b",
    "signer": "0xE8D6E5670A532CCA8099b7a222615B795D7E17CD",
    "userId": "617481694"
  }
}