{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "641818",
    "entityType": "User",
    "nonce": "0x98c3bdeb6aec7010b9112a362622ca61585f52b9ac29d72c9c1793507be1eded",
    "signature": "0xcc8802e06d0b5785e5f99e8b03ae0cfc06328da0f60bdae6ddfb9106ca8f860751b0f1495666dbe215fbcd6e61d3f5a63a20ce332c2125e55060c6c34d0037321c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}