{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304133",
    "entityType": "User",
    "nonce": "0xf1f31960586a417801e5b8118a2e02b9b7142ec07e2e7a0419c46b4ea0a1213a",
    "signature": "0x43f28109464628fcb5e6a4edceb51017b41ce1ed41b085f2c600ce24c860743a4b4df810000fe757b364a41cfed2043be12c0132c77d58f707dfbf05fbb13a821c",
    "signer": "0x4ad870a0C318214b4796d1464BC8Dc57C6b84C12",
    "userId": "408505072"
  }
}