{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "246308164",
    "entityType": "User",
    "nonce": "0xd880de3cbdd013bf41988feea64b6cfdd11ad2a974a43c2e6659e59cd5c45192",
    "signature": "0xdb93daf55f020579749d5561ac7690dd23ab0dd837eaad53ee7c19cb44c8179b01ef65af018bd555a62408e38058ad9f0a6bb2017ac66de595527611553928f01b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}