{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x395300f301da8f409cfdc7bdeb0fe420ab121227e10ebedc1b586419bb1e155e",
    "signature": "0xce13ff2c55c906f1d80288ffae97e7306ddbdc0717b25fc2e096b80098125ed258813e62622e4739dcb5630ace1604100cb32482e267e72be08a78b43f7f91c51b",
    "signer": "0x8007601d1dd4259C609Dbb38fceE9DF5B65ADf2a",
    "userId": "293743243"
  }
}