{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "323239",
    "entityType": "User",
    "nonce": "0xcca563aaabc9a4502e679405178bd5abc1fdbcc0ea3d46fa62251e6bef1c3a47",
    "signature": "0x9f3b635fad86b0f0f3533605b3664d9dd6657a91e45122c619387f6eadcdf8a34138c98c498f2bcd111ad92fa0e9f4c83ba2b664adc6a1326c40e7d285ca94d81c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}