{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1408973",
    "entityType": "User",
    "nonce": "0x66673f63650af1c226da494fe78a306a6b53e2c90d23af2ea2228e86ed51f110",
    "signature": "0xaac00d798ae9a71545a8ab936add0c4d707cf8ace33d0fbfffd22171ed526ba85cef12c7639db9a793fec7ab3ad05d0b62f85036e158afdaf8e4570a44cf47701c",
    "signer": "0xdbBC6a3103e586C3C5e3549d335207a90AE94630",
    "userId": "227779002"
  }
}