{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1698340",
    "entityType": "User",
    "nonce": "0x3f149d8b149d10fa21d1d76847117fa9c3b9929b0208801ea51e34577035cbc6",
    "signature": "0x045fe512d3000c763c020f3401a04887f1ac818c3b0b708342db2d750523229436358510306bc95c69a5e8cad89db9243f9ee5483e6b22580006b276c8274fbf1b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}