{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "273529333",
    "entityType": "User",
    "nonce": "0xd592a75c19e21545bb3517d26c330044eb50b03d7eeec45e93422c5a8bd347fd",
    "signature": "0xdd2a1af0c9c3d6dfce2ce70191b8cc166ef2d97640580e79ff2fa4e1293d13fe2c7d2e4a920320a8674850adceb38fca864b0dd9bce02bf9562c0be1ce8163941c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}