{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20583",
    "entityType": "User",
    "nonce": "0x643c57f8fd93d0f5e4270f5bb175f78a8bdde284779381c5f0e1532abe71c297",
    "signature": "0x63c30334f29dcb6fc4a13b81a70d6e8b9880bf779f966d589379e3572718f86523e9646bb105d556faf4de172b65394d1961994f279ae0bd55b31f31b19aa13d1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}