{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12615893",
    "entityType": "User",
    "nonce": "0xc8ffd21415dd1b295e6ac85ac7df0d8ed2d712aaa3dc1b1e3b25fde1b6325f12",
    "signature": "0x5a562267133c2ed3f99c9896256bedd4ac665e57ce9d97f0dc44d4fbb1982f7428abd27426750f56315bf53e0c6056f98cf8afbe875bdcdb430b66e01c80a0111b",
    "signer": "0xfeC67Ad878159a4F2DaAaCbcC968194928EDD306",
    "userId": "812315549"
  }
}