{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "337206",
    "entityType": "User",
    "nonce": "0xbd9b9b1c1d0982652781c917de90df80ee54fcfb1f12da7b019737ee44786813",
    "signature": "0xa657abc8328eef7aa879c70180a327b3906035f96169bbd97f9262f9b6bd0aca2e93b381cd95041807f86caece9b8cff9ed2af7bb0db3d7b7a1ff65ecfd637381c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}